Mr. Smith is in good health now for it is quite a long time since he __________.
A、notsmokedB
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It'sseventhirty.I_________gotoschool.
Americaisan__________country.Youcanhear__________everywhere.
Hecameintotheclassroom_________.
— How are you today? —Oh, I __________ as ill as I do now for a long time.
You __________ put your computer in your bedroom.
