--Why so serious, Tom?

--Nothing. I'm just thinking about the problem ________ tomorrow.

[　　]

“The interest ________ be divided into five parts, according to the agreement made by both sides, ”declared the judge.

[　　]

You ________ all those calculations（计算）! We have a computer to do that sort of thing.

[　　]

In those days, the old woman ________ sit at the door for hours, waiting for her son to return from abroad.

[　　]

--Yesterday Mary broke two glasses when she was washing them.

--I'm not sure. How ________ she be so careless?

[　　]

--I regret not telling Alice my new address and telephone number.

--That's too bad. You ________ her when you meet her.

[　　]

Mary and Susan were walking down the street ________ they met their English teacher.

[　　]

-- Mum, I've been studying English since 8 o'clock. ________ I go out and play with Tom for a while?

-- No, I'm afraid not. Besides, it's raining outside now.

[　　]

The number of people invited ________ fifty, but a number of them ________ absent for different reasons.

[　　]

--Look! Everything here is under construction.

--What's the pretty small house that ________ for?

[　　]