---Why haven’t you asked her to come here?---She _______ an important experiment
题型：不详难度：来源：
---Why haven’t you asked her to come here?
---She _______ an important experiment when I found her and she _____ it. | A．had done; didn’t finish | | B．was doing; hasn’t finished | | C．did; wouldn’t finish | | D．has done; hadn’t finished |
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答案
| B |
解析
| 你为什么没让她来这里呢？ 可以判断她没有来。她还在做实验 所以她还做完实验， she hasn’t finished it. 对现在产生了影响，而且还没有完成，所以用现在完成时。当我找到她的时候，她在做实验。过去进行时的概念。 |
举一反三
--- It’s difficult for the village children to cross the river for school.
--- I think a bridge _______ over the river. | A．should be built | B．is being built | C．has been built | D．was built |
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－Where’s your father?
－He__________ Hongkong for three days.| A．has gone to | B．has been in | C．has been to | D．went to |
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Her uncle _________ to the factory .He will be back __________ an hour .| A．has gone, after | B．has been, in | | C．has gone, in | D．has been, after |
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I’m sorry you’ve missed the train. It _______ 10 minutes ago.| A．has left | B．had left | C．left | D．has been away |
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When ___you _____ your breakfast this morning? At 6.00.| A．have, had | B．did, have | C．are, have | D．has, had |
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