—Why are you looking so worried? —I sent
题型:选择题
问题:
—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
—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