Visitors ________ not to touch the exhibits.

A．will request  B．are requested

C．are requesting  D．request

—Sorry，sir，your car isn't ready yet.

It ________ by our workers.

—Oh，my God，when can I come to fetch it?

A．is repaired  B．has been repaired

C．is being repaired  D．will be repaired

If their marketing plans succeed，they ________ their sales by 20 percent.

A．will increase  B．have been increasing

C．have increased  D．would be increasing

The wet weather will continue tomorrow when a cold front ________ to arrive.

A．is expected  B．is expecting

C．expects  D．will be expected

We first met on a train in 2010，but we both felt immediately that we ________ each other for years.

A．knew  B．have known

C．had known  D．know

—I'm sure Andrew will win the first prize in the final.

—I think so.He ________ for it for months.

A．is preparing  B．was preparing

C．had been preparing  D．has been preparing

I like these English songs and they ________ many times on the radio.

A．taught  B．have taught

C．are taught  D．have been taught

—Did you watch the basketball match yesterday?

—Yes，I did.You know，my brother ________ in the match.

A．is playing  B．was playing

C．has played  D．had played

—I'd like a pen which ________ well.

—Will this one ________？

A．writes；do  B．writes；work

C．is written；do  D．is written；work

I like getting up very early in summer.The morning air is so good ________.

A．to be breathed  B．to breathe

C．breathing  D．being breathed