It was not until he came back _____ he knew the police were looking for him.
| A．which | B．since | C．that | D．before |
—I’m going to attend your lecture at 9∶30 tomorrow morning.
—I regret to tell you that. When you arrive, it will have ended and I ________ questions with my students.
| A．would discuss | B．will discuss |
| C．will be discussing | D．am discussing |
—You’re coughing badly，Martin. Why not give up smoking?
—Give up smoking？Easier said than done，Amy. Once you ______ the habit of smoking，it is very hard for you to ______.
| A．keep up; break it away | B．take up; drop it out |
| C．pick up; get rid of it | D．build up; do away with it |
Nowadays，within a short walk along a busy street，you are ________ to find a chain store ______----a fastfood restaurant，a bakery，or a supermarket.
| A．probable; some kinds | B．likely; of some kind |
| C．possible; some kind of | D．unlikely; some kind of |
—What do you think of the coming 2012 London Games?
—Oh，the table tennis match is ________ to be the most exciting of it.
| A．preferred | B．wished | C．expected | D．proved |
In some cases，different approaches ________ the same scientific problem lead to conflicting theories.
| A．to | B．in | C．of | D．for |