Topics for textbooks and conference books should be_______ to the experiences and interests of the students.
| A．relevant | B．concentrated | C．reliable | D．based |
26. —How about buying Sam a mobile phone? After all, he isn’t a boy any more.
—I think it’s necessary, for we sometimes want to make sure if he ______home for dinner.
| A．will come | B．comes | C．has come | D．would come |
25. Mother told Jim to watch the milk until it boiled and then _____ off the gas.
| A．turn | B．turning | C．turned | D．having turned |
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. — Let’s discuss the question raised last night, shall we?
— There is no hurry for that. I___for a conference.
| A．headed | B．was heading | C．am heading | D．have headed |
22. To all the famous artists’ surprise, the unknown woman’s two____paintings are also on show in the art exhibition.
| A．little blue oil | B．blue little oil | C．oil blue little | D．little oil blue |