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His father ________ in the factory since he was twenty.
A. works B. has worked C. will work D. was working
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His father ________ in the factory since he was twenty.
A. works B. has worked C. will work D. was working
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I _________ _________ _________ _________ sad by the story.
2. The boy usually went to school late.(改为同义句)
The boy _________ _________ _________ to school late.
3. The river has been polluted by the factory since five years ago.(改为主动语态)
The factory _________ _________ the river since five years ago.
4. We're trying to save the manatees. (对画线部分提问)
_________ _________ you trying to _________ ?
5. Manatees eat about 100 pounds of food a day．(改为一般疑问句)
_________ manatees _________ about 100 pounds of food a day?
1.—How long __________ your father________ (work) in the factory?
—Since he ___________ (leave) college.
2. How long __________ you __________ (listen) to music last night?
3. When ____________you ________ (attend) the after-school club?
4. He is always the first one _______ (arrive) at school and the last ______ (leave) school.
5. We _______ (be) friends for the whole ten years.
6. _________ (collect) old coins is my father’s hobby.
7. My father had me ______ (clean) my bike, but I had it ________ (clean) in the shop.
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