The professor gives every one of us the impression ________ he is a real expert in this field．

A．which

B．what

C．where

D．that

We have made ________ clear that we are strongly against smoking in the office．

A．this

B．that

C．it

D．one

At first, it seemed that everything went well, but all of ________ sudden, the ship hit ________ iceberg．

A．a; an

B．a; the

C．the; the

D．/; an

You have to sign in at reception ________．Nobody is allowed to do it instead of you．

A．in detail

B．in vain

C．in person

D．in charge

________ is responsible for the accident will be punished for sure．

A．Whoever

B．Whomever

C．No matter what

D．No matter who

－Are you still waiting for Mr．Brown?

－Yes．He ________ to a student for almost an hour．

A．was talking

B．had been talking

C．is talking

D．has been talking

Peter is not working this week．You can ring him at home ________．

A．if necessary

B．if so

C．if true

D．if any

Teachers often bring up some mistakes from the test papers for the whole class to ________ the correction．

A．benefit from

B．pick out

C．check out

D．escape from

Don't worry that you have not enough cash．The bill ________ by cheque or by credit card．

A．may pay

B．must pay

C．may be paid

D．must be paid

A large amount of reading can help students feel ________ with the English test．

A．comfortable

B．bored

C．popular

D．busy