问题

We often go to school ________ seven ________ the morning. [ ]
A: at; on
B: on ; at
C: at; in
D:in; at
B: on ; at
C: at; in
D:in; at
正确答案是:
同类题型
I’m sorry you have missed the bus. It _____ five minutes ago. — What a pity!
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How old is Steve?—He is ____________ and he has an ___________ sister.
How _______ did you do a bird count there?—Twice. [ ]
Dennis works long hours each day, and he _____to become a doctor in 10 years .