He _____the job well, but he ____so careless. A．had done; had been B．could do; was ...
He_____thejobwell,buthe____socareless.A．haddone;hadbeenB．coulddo;wasC．couldhavedone;w...
He _____the job well, but he ____so careless. A．had done; had been B．could do; was C．could have done; was D．hadn’t done; had been
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| C |
| 答题的关键在于抓住句中的but，but后面的句子是对过去事实的陈述，应用一般过去时；前面的句子则表示“本来能够……”，是对过去事情的推断，因此应用could have done，句意为“他本来能够做好那工作，但他太粗心了。” |
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