With sufficient scientific information a manned trip to Mars should be _____.
| A．obtainable | B．potential | C．considerable | D．feasible |
--- George and Lucy got married last week. Did you go to their wedding?
--- No, I _______. Did they have a big wedding?
| A．was not invited | B．didn’t invite | C．hadn’t been invited | D．haven’t been invited |
The reason ____ I have to go is _____ my mother is ill in hospital.
| A．why ; why | B．why; because | C．why ; that | D．that; because |
To get a better view of the stage, _________________ .
| A．our seats had to be changed | B．we had to change our seats |
| C．our seats were changed | D．our seats will be changed by us |
--- Could I use your dictionary?
--- ________________.
| A．Go ahead, help yourself, please | B．Yes, you could |
| C．With pleasure | D．It doesn’t matter |
It’s necessary to be prepared for a job interview. ________ the answers ready will be of great help.
| A．To have had | B．Having had | C．Have | D．Having |