We all write ________, even when there's not much to say．

A．now and then

B．by and by

C．step by step

D．more or less

Their working conditions ________ the same ________ before．

A．were stayed; as

B．were stayed; to

C．stayed; as

D．stayed; to

The old man told us ________ shut the window when he was in．

A．don't

B．not to

C．not

D．don't to

I don't know how the accident ________．

A．come about

B．was come about

C．came about

D．is coming about

Jiansu has ________ more U．S dollars this year than that year．

A．brought

B．brought up

C．brought in

D．brought out

My classmate has some trouble ________ spelling some of the words in American English．Meanwhile, I have some difficulty ________ my pronunciation．

A．with; with

B．in; with

C．in; in

D．with; in

I must be off now, I hope we will ________ each other by letter．

A．communicate with

B．see again

C．meet with

D．write to

________ the houses were knocked down in the earthquake．

A．A great many

B．The number of

C．A great many of

D．A great deal of

When you've finished the exercises, I'll give you the answers ________ the questions．

A．for

B．on

C．of

D．to

________ so many people ________ us, we finished our work ahead of time．

A．With; helping

B．When; helping

C．With; helped

D．Because; help