--- Have you told him we have changed the plan?
I _____ have, but I haven’t done it yet.
| A．must | B．ought to | C．needn’t | D．can’t |
________ his arrival, he began to make preparations for the speech of the conference.
| A．In | B．With | C．On | D．By |
—I’m sure Andrew will win the first prize in the final.
—I think so. He ________ for it for months.
| A．is preparing | B．was preparing | C．has been preparing | D．had been preparing |
The teacher stressed again that the students should not ________ any important details while retelling the story.
| A．figure out | B．let out | C．leave out | D．pick out |
—The guard keeps watch at the gate.
—So he does. Only those knows well could be let in.
| A．close; who | B．tight; whom | C．tight; that | D．close; he |
He _______ have escaped, but he chose to stay and fight.
| A．must | B．could | C．will | D．need |