It_____ have been Tom that parked the car here, as he is the only one with a car.

— Who is absent from the lecture today?
—_____________you ask? Peter, of course.

The weather in Inner Mongolia is always dry, but sometimes it _____ rain heavily.

--- May I smoke here?
--- If you       , choose a seat in the smoking section.

—We need a person badly to be in charge of this design.
—________ the new comer have a try?

I can’t find my socks. Where ________ I have dropped them?

It was a fine day yesterday. I ________ have taken my raincoat with me.

-–Mary knows the city quite well.
--She______ well have been there before.

When disaster strikes, you _____ find yourself without water, gas and electricity.