Sir,you should ________ at the red light, but you didn't．

A．stop

B．have to stop

C．have stopped

D．not have stopped

He hurried to the railway station for the last train but didn't ________ it．

A．knock

B．announce

C．rush

D．make

The flight to Guangzhou had to be ________ because of the heavy snow．

A．put up

B．put off

C．put away

D．put down

You ________ stand in line while waiting for the bus．

A．mustn't

B．can't

C．are supposed to

D．don't

By the time he arrived at the airport, the plane ________．

A．has taken off

B．was taking off

C．would take off

D．had taken off

The boy was seen ________ on the sports ground．

A．to play

B．play

C．played

D．to playing

I went to the city, but my parents ________ at home．

A．got

B．remained

C．staying

D．remaining

Mary called me to come to the party, but she herself didn't ________．

A．show around

B．show up

C．come out

D．put up

The strategies that he came up with ________ fine．

A．work out

B．worked out

C．working out

D．to work out

These books should provide us ________ all the information we need．

A．in

B．for

C．with

D．to