Our class is made up of 68 students,________ are girls．

A．of which two-fifths

B．of whom two—fifths

C．two-fifth of which

D．two-fifth of whom

In area it is approximately the same size as the USA(without Alaska), ________,however, has ________．

A．which, more than fourteen times as many people

B．which, fourteen times more than many people

C．what, as fourteen times as many people

D．where, more than fourteen times as many people

Faced with a bill for $ 10,000, ________．

A．John has taken an extra job

B．the boss has given john an extra job

C．an extra job has been taken

D．an extra job has been given to John

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

A．had been

B．will be

C．would be

D．has been

Clouds are gathering．I think we’d better ________ the school in case it starts to rain．

A．run out

B．bring up

C．refer to

D．head for

I love ________ history because it gives me ________ knowledge of past events．

A．the; a

B．a; a

C．/; a

D．/; /

At the conference the leadership began to talk about ________ later came to be the Marshall Plan．

A．which

B．what

C．that

D．the one

－ You ________ getting a ticket．

－ Yes, but I didn’t notice the road sign when I was turning the corner．

A．should have avoided

B．must have avoided

C．could have avoided

D．might avoid

The price of any product is linked to a complicated(复杂的)system of prices ________ everything depends on everything else．

A．where

B．which

C．that

D．of which

The Internet is an important channel of learning more information, but many people use it for ________ purpose than to send and receive emails．

A．another

B．other

C．the other

D．no other