EXERCISE 3 : Change the following sentences into passive voice.
a. They have used that refrigerator for fifteen years.
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b. Minh has just washed these clothes.
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c. The students have prepared the report since last week.
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d. Someone has put those books on the top shelf.
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e. Have they finished the work yet ?
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f. Someone has damaged this table badly.
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g. They have changed the date of the meeting.
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h. Ann has borrowed that dictionary from this library.
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i. Their parents have just bought a house with full comfort.
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j. I have forgotten the name of the man.
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English has been learnt for 5 years.