He ___________busy yesterday, or he __________you with your experiment.A．was; h
题型：不详难度：来源：
He ___________busy yesterday, or he __________you with your experiment.| A．was; had helped | B．was; would have helped | | C．had been; would have helped | D．were; would have helped |
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答案
| B |
解析
试题分析：考查时态和虚拟语气：句意：昨天他很忙，否则，他就可以帮助你做实验了。第一空是过去的事实，用一般过去式，这里or相当于if he hadn’t been busy这样的虚拟语气条件句，所以后面的主句用would have helped。选B。 |
举一反三
---You look very tired.
---Well, __________my lessons all the afternoon.| A．I have reviewed my lessons | B．I have been reviewing | | C．I reviewed | D．I had reviewed |
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I won’t tell the student the answer to the math problem until he on it for more than an hour.| A．has been working | B．will have worked | C．will have been working | D．had worked |
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All visitors to this village_________ with kindness.| A．treat | B．are treated | C．are treating | D．had been treated |
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His sister left home in 1998, and _________ since then. | A．hadnotbeenheard | B．hasnotbeenheardof | | C．hadnotheardof | D．hasnotheardof |
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He is constantly ________ not to do that, but he still goes on doing it all the same. | A．telling | B．being told | C．told | D．to tell |
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