—Have you known Dr. Jackson for a long time?—Yes, since she________ the Chinese
题型：不详难度：来源：
—Have you known Dr. Jackson for a long time?
—Yes, since she________ the Chinese Society.| A．has joined | B．joins | C．had joined | D．joined |
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答案
| D |
解析
| 该句完整的句式是：I have known Dr. Jackson since she joined the Chinese Society. since后跟的时间状语从句要用一般过去时，表示自从过去某个时间发生的动作到现在以来有多长时间了。 |
举一反三
The wet weather will continue tomorrow when a cold front ______ to arrive.| A．is expected | B．is expecting | C．expects | D．will be expected |
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The moment I got home, I found I_____my jacket on the playground.| A．had left | B．left | C．have left | D．was leaving |
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Though we don’t know what was discussed, yet we can feel the topic_____.| A．had changed | B．will change | C．was changed | D．has been changed |
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The telephone _______, but by the time I got indoors, it stopped.| A．had rung | B．was ringing | C．rings | D．has rung |
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I don’t believe you’ve already finished reading the book — I ______it to you this morning!| A．would lend | B．was lending | C．had lent | D．lent |
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