But don’t think there is nothing else you can do _____ the interview is over. You should write to the company to thank them for giving you the interview.

A．if

B．once

C．when

D．though

The moment ________ Leo will never forget is________ Mr. Smith gave him a lot of valuable advice on how to improve his writing.

A．that; when

B．that; that

C．when; that

D．when; /

As the sea ice melts sooner each swimmer,polar bears are forced to come ashore earlier and face food shortages _____ they have stored enough fat to last them through the season.

A．before

B．unless

C．since

D．until

____ you have a chance , you might as well make full use of it.

A．Now that

B．After

C．Although

D．Even if

______ he had worked hard all the time, he failed the exam again.

A．If

B．As

C．While

D．Because

____time goes by, Mother’s hair is turning gray and the wrinkles on her face deeper.   

A．with

B．as

C．while

D．when

_______________made our school proud in 2011 was ____________ more than 40% of the  students had been admitted to key universities.

A．What ; because

B．That; what

C．What ; that

D．That ; because

—Do you think the weather will be all right this summer?
—No, _____ we are lucky. The newspaper says it'll be very hot anyway.

A．if

B．though

C．unless

D．as

    Professor Hawking stepped into the office I knew that there was no hope.

A．Unless	B．Now that
C．Although	D．The moment

High school students should be given enough sleeping time , _______ they are busy with their study .

A．even so

B．as though

C．as if

D．even if