—Did you find the missing couple in the mountain yesterday?—No, but we ________
题型：不详难度：来源：
—Did you find the missing couple in the mountain yesterday?
—No, but we ________ to get in touch with them ever since. | A．have tried | B．have been trying | C．had tried | D．had been trying |
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答案
| B |
解析
| 因为ever since是“自那以后(直到现在)”之意，常与完成时连用，又根据but 可知，现在也还在设法与他们取得联系，所以用现在完成进行时。 |
举一反三
－Oh, it’s you, Steve! I ________ you.
－No surprising. I’ve just had my hair cut.| A．don’t recognize | B．haven’t recognized | C．didn’t recognize | D．hadn’t recognized |
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—You were out when I dropped in at your house.
—Oh, I ________ for a friend from England at the airport. | A．was waiting | B．had waited | C．am waiting | D．has waited |
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— I called you at ten, but there was no reply.
—Oh, that was probably when I ________ a shower. | A．am taking | B．took | C．were to take | D．was taking |
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－The enemy spy was found at last. －Really? Where ________ himself? | A．had he hidden | B．did he hide | C．has he hidden | D．was he hidden |
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Why don’t you put the meat in the fridge? It will ________ fresh for several days. | A．be stayed | B．stay | C．be staying | D．have stayed |
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