I think I have tried my best.All that can be done ---.

学习时间:2026-04-08 23:25:27 阅读：7152

I think I have tried my best.All that can be done ___.A.has done B.has been done C.had done D.had been done为什么选B不选D

怕黑的红牛

2026-04-08 23:25:27

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我认为我已经尽力了,所有能做的都做了。All that（ can be done）has……和I think I have……里的have同时态。表示现在已经,从现在来看。过去完成时,是过去的过去,要有一个过去的时间点才行。这题是讲现在。