－Are you coming to the party?

－I’m not sure ________ go to the concert instead．

A．must

B．might

C．should

D．would

Her father makes himself ________ longer hours ________ the big family．

A．to work; to raise

B．to work; raise

C．work; to raise

D．work; raise

The police were looking into the accident,hoping to find out ________ that had caused it．

A．what it was

B．what was it

C．how it was

D．how was it

The first edition ________ in 1955 and ________ a best seller ever since．

A．was published; had been

B．had been published; had been

C．has been published; has been

D．was published; has been

Let’s put off the picnic until next week ________ the weather may be ________ better．

A．since

B．if

C．as

D．when

With the great weight ________ off her mind,she passed the test successfully．

A．taking

B．taken

C．take

D．to be taken

“What courses are you going to take next semester if you want to receive enough credits to get your degree?”

“I don’t know．But it’s about time ________ on something．”

A．I’ d decide

B．I decided

C．I decide

D．I’m deciding

________ for the fact that she got hit by a car and broke her leg on her way to school, she might have passed the exam．

A．Had it not been

B．Hadn’t it been

C．Was it not

D．Were it not

The experiment on the monkey to test the new drug, which has already been advertised on TV, requires more money than ________．

A．have been put in

B．being put in

C．has been put in

D．to be put in

Woman ________ Hillary Clinton is, she was bold enough to participate in the presidential campaign, 2008．

A．who

B．as

C．that

D．like