Inspring,wecanoftenhearsomebirds

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问题详情:

 Inspring,wecanoftenhearsomebirds

 In spring, we can often hear some birds_______ in our school.

    A. singing           B. sing               C. to sing                  D. sings

【回答】

B

知识点:动词和动词短语

题型:选择题

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