Janet's school work is well above the ________．Her parents are proud of her．

A．usual

B．average

C．common

D．ordinary

We thought ________ necessary to invite Professor Smith to give us a lecture on how to learn English．

A．that

B．it

C．this

D．him

We can never expect ________ bluer sky unless we create ________ less polluted world?

A．a; a

B．the;/

C．a;/

D．the; a

The price for that apartment has risen ________ another 200 dollars a square meter．

A．at

B．to

C．by

D．for

If you order any goods on our website, we'll ________ your order to your door within 48 hours．

A．bring

B．send

C．transport

D．deliver

While reading, you may________ a dictionary if you don't know the meaning of a word．

A．look up

B．turn up

C．refer to

D．come to

The buildings ________in the east of Handan are the city's theatre, museum and library．

A．to build

B．being built

C．having built

D．to have been built

Tom's father is seriously ill, ________ is exactly ________he is worried about．

A．which; that

B．that; what

C．what; which

D．which; what

Email, as well as letters, ________ an important part in daily communication．

A．are playing

B．is playing

C．have played

D．play

Young drivers are far more________ to have accidents than older drivers．

A．possible

B．probable

C．certainly

D．likely