题目内容

【题目】用正确的介词填空。

1.I sleep in ______ (in/on) the morning.

2.I go to school ______ (in/on) Mondays.

3.What do you do ______ (in/on) the afternoon?

4.Is Amy ______ (in/at) home?

【答案】in on in at

【解析】

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