【单选题】【消耗次数：1】
＿＿＿ your letter，I would have started off two days ago.
①
If I could have received
②
Should I receive
③
Had I received
④
If I received
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【单选题】
＿＿＿ your letter，I would have started off two days ago.
①
If I could have received
②
Should I receive
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Had I received
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If I received
【单选题】
I had to complete the assignment by Friday [] otherwise, I would have failed the course.
①
comma
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semicolon
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If I had remembered __________ the window, the thief would not have got in.
①
to close
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A: I havent received the book which I ordered from you last Saturday. B: Please tell me the serial number on your order sheet. [填空].
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②
Trust me
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I promise
【单选题】
I received his mother’ s telephone call at eleven. _____ that
he was badly hurt in an accident yesterday.
①
Then did I know
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Only then I knew
③
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Only then knew I
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