题目内容
用适当的介词填空:
1.She always goes out for a walk after supper ________ the evening.
2.We often watch “CCTV News” on TV ________ 7 p. m.
3.It is a good idea to go for a walk ________ a sunny morning.
4.We have Computer classes ________ Mondays.
5.Birds fly to the south ________ autumn.
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