Among the many dangers__________ sailors have to face, probably the greatest of all is fog.

A.which B.what

C.where D.when

The climate here is quite pleasant, the temperature rarely, ________, reaching 30℃ in summer.

A.if not B.if ever C.if any D.if so

Until now, we have raised 100,000 pounds for the poor children, ___________ is quite unexpected.

A.that B.which C.who D.it

I'll be out for some time. ______ anything important happens, call me up immediately.

A.In case B.As if

C.Even though D.Now that

I’ve ordered some pizza, so we _______ worry about cooking when we get home tired.

A.can’t B.dare not C.needn’t D.may not

She drove so fast at the turn that the car almost went _______ the road.

A.on B.along C.from D.off

—I spent two weeks in London last summer.

—Then you must have visited the British Museum during your stay, ______________ you?

A.mustn’t B.haven’t

C.didn’t D.hadn’t

--- Jack, I’d like to have your opinions about my written report.

--- _______. But I have one suggestion.

A.That’s a good idea B.You are too modest

C.It looks fine to me D.You should check it first

Exactly______ the potato was introduced into Europe is uncertain, but it was probably around 1565.

A.whether B.why

C.when D.how

（2014·全国大纲卷）I think Mrs. Stark could be _______ between 50 and 60 years of age.

A.anywhere B.anybody

C.anyhow D.anything