— Tom, are you going swimming with us?
— I’d love to, but something important has ______.
| A．ended up | B．given up | C．used up | D．come up |
The knowledge that his friends have deserted him is a (n) ______ pill for Mr. Smith to swallow.
| A．extra | B．common | C．bitter | D．effective |
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 |