—Why are you looking so worried?
—I sent an email to my son in America last week, but no reply ________.
A.was received | B.had received | C.has received | D.has been received |
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—Why are you looking so worried?
—I sent an email to my son in America last week, but no reply ________.
A.was received | B.had received | C.has received | D.has been received |
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