—May I go and play with Dick this afternoon, Mum?
—No, you can’t go out _______ your work is being done.
| A．before | B．until | C．as | D．the moment |
_______, there would be no air around the earth.
| A．There were no gravity | B．There was not any gravity |
| C．Were there no gravity | D．was there no gravity |
______ seen such a magnificent city as Beijing.
| A．I before never have | B．Never have before I |
| C．Never before have I | D．Before never have I |
Those children are wild. I feel sorry for _____ has to be their baby-sitter.
| A．whom | B．who | C．whoever | D．the one |
I want you to be honest. I hope you feel free to say _____ is on your mind.
| A．whatever | B．anything | C．everything | D．that |
I’m considering ______ my house ________.
| A．to have; rebuilt | B．having; rebuild | C．having; rebuilt | D．having; to be rebuilt |