——This wall of air is an effective answer to the problem and it ____ work.
——But it is a question to put such a wall of air around the statue.
| A．may | B．must | C．should | D．could |
She had a tense expression on her face, she were expecting trouble.
| A．even though | B．as though | C．even as | D．now that |
He seems too tired today, and I wonder he got a good sleep last night.
| A．when | B．that | C．if | D．where |
—_______ John this week?
—Yes.
—Where _______ him?
—In the library.
| A．Did you see; did you see | B．Have you seen; did you see |
| C．Do you see; have you seen | D．Have you seen; have you seen |
Then ________ we had been looking forward to.
| A．came the hour | B．the hour came |
| C．comes the hour | D．the hour is coming |
Although Tom agreed with her on most points, here was onehe was unwilling to give in.
| A．on which | B．in which | C．to which | D．with which |