I really wonder ______ he has posted me many parcels _____ we worked together .
题型：不详难度：来源：
I really wonder ______ he has posted me many parcels _____ we worked together . | A．how ; after | B．why ; when | C．when ; before | D．why ; since |
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答案
| D |
解析
| 英语中的连词since有这样的特性：终止其后从句中的延续性的谓语动词的动作。第二个空白处填入since之后，这个从句的意思是：自从我们不在一起工作起。此外，since还可使其后从句里的非延续性的谓语动词延续。例如：It is 15 years since he joined the Army . (他参军已经十五年了。) |
举一反三
A man does not know the difficulty of anything _____ he does it personally . | A．although | B．if | C．because | D．unless |
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They kept trying _____ they must have known it was hopeless.| A．if | B．because | C．when | D．where |
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| He was not an actor, who often appeared on stage, _____ a writer, writing stories. |
| ____ I agree with most of what you said, I don"t agree with all. |
He told me the news_____, believe it or not, he had earned $1 000 in a single day.| A．that | B．which | C．as | D．because |
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