The room is smart. It is ________ to a computer in the centre.

A.match B.work C.linked D.run

Although this maths problem is a little difficult, try to work out by ________ ,children.

A.your B.you C.yourself D.yourselves

Yesterday morning I was just leaving_______the telephone rang.

A.when B.while C.because D.since

Some people waste food ________ others haven't enough.

A.while B.during C.when D.which

The novel is funny, so I ________ it to you.

A.welcome B.recommend C.value D.work

Keep quiet! You ________ talk loudly in the library and you ________ obey the rules.

A.mustn't; should B.needn't; can't C.should; may D.must; can't

Nowadays my parents ________ a walk around our estate after supper every day.

A.used to taking B.are used to taking

C.used to take D.are used to take

Tom failed in the maths exam last week, ________ he?

A.didn't B.did C.hadn't D.had

My uncle ________ Xi'an for more than two years.

A.has gone to B.has been in

C.has been to D.has left

—Can I smoke in this meeting room?

—I'm afraid you ________.

A.needn't B.may C.must D.can't