---I’m going to the States for further study.
---How long ____ you ___there?
| A．had , stayed | B．did, stay | C．have, stayed | D．are, staying |
.
Lucy’s new job paid twice as much as she had made _________ in the restaurant.
| A．work | B．working | C．to work | D．worked |
.
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 |