Not having promoted the new digital camera successfully, the company should ______ its original marketing methods.
A. account for B. reflect on C. work out D. call up
Sometimes smiles around the world ______ be false, hiding other feelings like anger, fear or worry.
A. must B. would C. should D. can
Was it not until you began to write ______ you should have remembered more words?
A. did you realize B. that you realized
C. did you not realize D. that you didn't realize
In his lecture, the professor referred to the belief, in contrast to all other countries, ______ the elderly are wise, ______ is particularly dominant （占优势的） in the Chinese culture．
A. that; that B. that; one that C. which; which D. that; one
--- I saw your uncle take a taxi to the airport. Why didn’t you drive him there?
--- I ______. But my car ______.
A. would; was fixed B. would have; was fixed
C. would have; was being fixed D. did; was being fixed
I will be surprised if you can get Calvin, who is very mean, ______ these donation draw tickets from you．
A. buy B. buying C. buys D. to buy
