问题

Ann helps Lily with her homework ______ eight o’clock ______ Sunday. [ ]
A: on;in
B: in;on
C: at;on
D:at;in
B: in;on
C: at;on
D:at;in
正确答案是:
同类题型
What’s this _______ English?—_______ a ruler.[ ]
It’s time for us as parents to teach our children right way to dress.
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The mother with her little son ____ at my home _____ that snowy night.
Jimmy is _________one-year-old boy and he has_________8-year-old sister.