I can hear many birds________ in the trees.A.to sing B.singed C.singing D.sings

题目

I can hear many birds________ in the trees.A.to sing B.singed C.singing D.sings

答案

I can hear many birds________ in the trees.
A.to sing B.singed C.singing D.sings
选项是C.
hear sb/sth doing sth听见某人/某物正在做某事.现在分词singing做hear的【宾语birds】的补足语.
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