-- Did Mike fix furniture himself?
--- He ______, because he doesn’t know much about carpentry.
| A．has it fixed | B．had fixed it | C．had it fixed | D．fixed it |
24. “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 |
23. In some countries, _______ are called “public schools” are not owned by the state.
| A．that | B．which | C．as | D．what |
22. “How long do you suppose it is _______ he left for Japan?” “No more than half a month.”
| A．when | B．before | C．after | D．since |
21. Mr Zhang is mild in character. He never shouts ____ he is very angry.
| A．if | B．even | C．though | D．even when |
20. John shut everybody out of the kitchen _______ he could prepare his grand surprise for the party.
| A．which | B．when | C．so that | D．as if |