— What are you going to do this weekend?
— I don’t know. I ______ visit a friend.
| A．might | B．can | C．should | D．must |
—He is a very hard-working student.
— ______. As far as I know, he often burns the midnight oil.
| A．Youcansaythatagain | B．Absolutelynot |
| C．Heavenknows | D．Noway |
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 |