－________ leave at the end of this month．

－I don’t think you should do that until ________ another job．

A．I’m going to; you’d found

B．I’m going to; you’ve found

C．I’ll; you’ll find

D．I’ll; you’d find

It wasn’t until nearly a fortnight later ________ I received the CD I booked on the Internet．

A．since

B．when

C．that

D．as

When the Challenger exploded in 1986, people were reminded just how dangerous space travel ________ be．

A．must

B．shall

C．will

D．can

Never before ________ in greater need of modern life than it is today．

A．has the computer been

B．the computer has been

C．was the computer

D．the computer was

－Pretty soon I’ll know where everything is located．Sorry to bother you．

－It’s no bother at all．That’s ________ I’m here for．

A．why

B．what

C．who

D．how

The height of the 984-foot-tall(usually)Eiffel Tower ________ depending on the temperature, by as much as 6 inches．

A．varies

B．descends

C．promotes

D．transforms

－I wish it would stay a beautiful day for the weekend．

－________ it doesn’t snow．

A．In case

B．As long as

C．So that

D．If not

－Do you know that John Tomson has got the first place in the running race?

－________．He ran more than 5,000 meters every day．

A．No problem

B．Not a surprise

C．Not wonder

D．No doubt

A person ________ on a mountain peak can see a match ________ 50 miles away on a clear night when there is no moon．

A．seating, striking

B．sitting, striking

C．sat, struck

D．seated, struck

I’m afraid Mr．Carson is at a very important meeting at the moment and cannot be ________．May I know who is calling?

A．interrupted

B．broken

C．troubled

D．disturbed