摘要：is, how, your, old, father, (?)
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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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