While writing a letter, ________．

A．The doorbell rang

B．The doorbell rings

C．I heard the doorbell ring

D．I heard the doorbell rings

They watched the boy ________ into the water from the ________ board．

A．diving; dive

B．dive; dive

C．to dive; diving

D．diving; diving

To enjoy the scenery, John would rather spend long hours on the train ________ by air．

A．than travel

B．to travel

C．while to travel

D．travel

The proposal he ________ at the meeting was so practical that the headmaster immediately expressed his satisfaction．

A．put forward

B．put away

C．put down

D．put up

You can take as many as you like because they are free of ________．

A．fare

B．charge

C．money

D．pay

________ Xiao Wang’s advice, we won the football game in the end．

A．Thanks for

B．Thanks to

C．With thanks for

D．Thanks

Mr Liu devoted his whole life ________ his research work．

A．for doing

B．to do

C．doing

D．to doing

The cap is a good ________ the coat．

A．match with

B．match of

C．match for

D．match in

I must think of a proper gift for my mother, ________ won’t be expensive but will make her happy．

A．what

B．one

C．it

D．one that

The house, ________ the roof was destroyed in a fire, has now been repaired．

A．who’s

B．of which

C．its

D．whose