At the airport there __________ thousands of passengers who are waiting for their flights every day．

A．were

B．are

C．is

D．was

She has a brother __________ name I can’t remember．

A．that

B．who

C．which

D．whose

I find __________ interesting to learn English by watching English movies．

A．that

B．it

C．this

D．them

Tom’s mother told him not __________ in the river because it was dangerous．

A．swam

B．swim

C．to swim

D．swimming

This picture is very beautiful, __________?

A．is it

B．isn’t it

C．does it

D．doesn’t it

Sam is _________ to pass the mid-term exam because he is working very hard．

A．probable

B．likely

C．maybe

D．possible

His son will _________ the business when Mr．Smith gets old．

A．take over

B．take off

C．take down

D．take out

_________ is strange to us that the troublesome boy is getting along well with all his teachers．

A．What

B．It

C．Which

D．That

She had a feeling _________ she was being watched by a tall man in a dark overcoat．

A．what

B．that

C．which

D．whether

By the time he was twenty, he _________ a company of his own．

A．had set up

B．has set up

C．sets up

D．would set up