With a lot of tough problems &

With a lot of tough problems , the pilot was still calm, cool and collective under pressure.
A.solve B.solved C.solving D.to solve
007afa 1年前 已收到1个回答 举报

ll丐帮ll 幼苗

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D

本题考查非谓语动词。根据题意可知,问题仍没有被解决,故用不定式,故选D。

1年前

3
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