The Grade 9 students often have a picnic Sunday afternoons.A. inB. onC. atD. to

发布时间：2020-08-21 09:58:00

The Grade 9 students often have a picnic      Sunday afternoons.
A. in
B. on
C. at
D. to

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A. in
(答案→)B. on
C. at
D. to
解析：此题考查介词的用法。在星期日的下午要用介词on。
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