Exercise 4
In the following sentences, underline the verb forms which show that the person denoted by the subject does something. Circle the verb forms which show that something is done to the subject:
(a) She has sung a song.
Ans: She has sung (underline) a song.
(b) A song has been sung by her.
Ans: A song has been sung (circle) by her.
(c) He will draw a picture.
Ans: He will draw (underline) a picture.
(d) A picture will be drawn by him.
Ans: A picture will be drawn (circle) by him.
Exercise 5
Change the voice of the following sentence :
(a) Nila has bought a book.
Ans: A book has been bought by Nila.
(b) They will have seen the cricket match.
Ans: The cricket match will have been seen by them.
(c) Bhola had seen a tiger.
Ans: A tiger had been seen by Bhola.
(d) The nurse will attend the patient.
Ans: The patient will be attended by the nurse.
Exercise 6
Change the voice of the following sentence:
(a) Do the sum.
Ans: Let the sum be done
(b) The poem was written by her.
Ans: She wrote the poem.
(c) Open the door
Ans: Let the door be opened.
(d) The man is known to me.
Ans: I know the man.
Exercise 7
Change the voice of the following sentences:
(a) They agreed to my plan.
Ans: My plan was agreed to by them.
(b) My brother lost my favourite pen.
Ans: My favourite pen was lost by my brother.
(c) The man is writing a letter.
Ans: A letter is being written by the man.
(d) Titli is looking for her watch.
Ans: Her watch is being looked for by Titli.
Exercise 8
Tick the correct alternative given in the brackets:
(a) It (rains / has been raining / is raining) since morning.
Ans: It has been raining since morning.
(b) Last Sunday I (went/ had been going /go) to the zoo.
Ans: Last Sunday I went to the zoo.
(c) (will be / was / am) in class X next year.
Ans: will be in class X next year.
(d) Rina (have reached / had reached / has reached) home just now.
Ans: Rina has reached home just now.
Exercise 9
Use the following flow chart to write a paragraph within 100 words on how to prepare orange juice:
oranges bought from the market – sorted – rotten ones removed – cleaned – peeled – put in juicer – juice extracted – sugar and preservatives added – poured in bottles – sealed – ready to be sold
Ans:
How Orange Juice is Prepared 
To prepare orange juice, fresh oranges are first bought from the market. They are then sorted carefully, and any rotten ones are removed. The selected oranges are thoroughly cleaned before peeling. After peeling, they are put into a juicer to extract the fresh juice. Next, sugar and preservatives are added to enhance taste and shelf life. The juice is then poured into bottles and sealed tightly to maintain freshness. Finally, the bottles are ready to be sold in the market.
বাংলা অর্থ:
কমলালেবুর রস প্রস্তুতির প্রক্রিয়া
কমলালেবুর রস প্রস্তুত করতে প্রথমে বাজার থেকে তাজা কমলালেবু কেনা হয়। এরপর সেগুলো বাছাই করা হয় এবং পচা লেবুগুলো ফেলে দেওয়া হয়। তারপর ভালোভাবে ধুয়ে পরিষ্কার করা হয়। এরপর খোসা ছাড়িয়ে লেবুগুলো জুসারে রাখা হয়, যাতে রস বের করা যায়। পরে স্বাদ বাড়াতে এবং সংরক্ষণের জন্য চিনি ও প্রিজারভেটিভ মেশানো হয়। তারপর রস বোতলে ভরা হয় এবং ভালোভাবে সিল করা হয়, যাতে এটি সতেজ থাকে। অবশেষে, বোতলগুলো বিক্রির জন্য প্রস্তুত হয়ে যায়।
Exercise 10
Write a paragraph within 100 words on how you plan to take care of street dogs. Use the following hints:
cruel actions towards street dogs – necessity of looking after them – ways of taking care of the dogs – conclusion
Ans: Caring for Street Dogs 
Street dogs often face cruelty from humans, such as being beaten, starved, or ignored. However, they deserve love and care just like pet dogs. To help them, I plan to provide food and clean water daily. I will also take sick or injured dogs to the vet for proper treatment. Building small shelters for them during extreme weather will be beneficial. Moreover, I will spread awareness about kindness towards animals. If more people show compassion, street dogs can live a safer and happier life.
বাংলা অর্থ:
রাস্তার কুকুরদের যত্ন নেওয়া
রাস্তার কুকুরদের অনেক সময় নির্মমতার শিকার হতে হয়—মানুষ তাদের মারধর করে, খাবার দেয় না বা অবহেলা করে। তবে, পোষা কুকুরের মতো তারাও ভালোবাসা ও যত্ন পাওয়ার যোগ্য। আমি পরিকল্পনা করেছি প্রতিদিন তাদের খাবার ও পরিষ্কার পানি দেওয়ার। অসুস্থ বা আহত কুকুরদের চিকিৎসার জন্য আমি তাদের পশুচিকিৎসকের কাছে নিয়ে যাব। শীত-গ্রীষ্মে তাদের থাকার জন্য ছোট আশ্রয় বানানো দরকার। পাশাপাশি, মানুষকে প্রাণীদের প্রতি দয়ালু হওয়ার জন্য সচেতন করবো। সবাই যদি একটু সহানুভূতি দেখায়, তাহলে রাস্তার কুকুররাও নিরাপদ ও সুখী জীবন পেতে পারে।