I recognized him_________ I saw him in the crowd.
| A．now that | B．in case | C．the moment | D．if |
.
Would it be ________ for you to pick me up at four o’clock and take me to the airport?
| A．free | B．vacant | C．handy | D．convenient |
.
By the time he realizes he ________ into a trap, it’ll be too late for him to do anything about it.
| A．walks | B．walked | C．had walked | D．has walked |
.
This photo of mine was taken ________ stood the famous high tower.
| A．which | B．where | C．in which | D．there |
.
________ was most important to her, she told me, was her family.
| A．It | B．This. | C．What | D．As |
.
The mail was ________ for two days because of the snow storm.
| A．held out | B．held off | C．held up | D．held down |