I want to be a ________ when I grow up because I am keen on laws(法律)．

A．soldier

B．policeman

C．judge

D．teacher

The computers are very important．They can ________ railways and fly aeroplanes and spaceships．

A．operate

B．operating

C．operated

D．open

The students ________ the importance of learning English already．

A．realize

B．has realized

C．realized

D．have realized

I ________ have breakfast in the morning．It's bad for my health．

A．usually

B．always

C．hardly ever

D．often

You'd better ________ a rest now．

A．to have

B．have

C．having

D．had

Her ambition is ________ an engineer．

A．become

B．to become

C．be

D．/

Mother told me ________ walk along the river．

A．do not

B．not to

C．to not

D．not

He promised ________ me a nice car．

A．buy

B．to buy

C．bought

D．to have bought

It's very kind of you ________ me with my English．

A．help

B．helping

C．to help

D．helps

His jokes made us all ________．

A．to laugh

B．laughing

C．laugh

D．laughed