By the time he realizes he ______ into a trap, it’ll be too late for him to do anything about it.

----Hi, Tracy; how are you doing?
-----I’m tired out, for I ______my living room all day.

I ______ Beijing for Shanghai in a few days. Do you know when the earliest plane ________?

---Don’t put the waste on the ground.                
---Oh, I’m very sorry. I ________ the dustbin there.

By the time she ________ home, her parents will have prepared some delicious food for her. 

I want to buy that kind of cloth because I ______ the cloth ______ well．

The country has already sent up three unmanned spacecraft, the most recent ________ at the end of last March.

--- Let’s hurry, Mum!
--- Take it easy, my dear! The shop          open till ten o’clock on Saturdays.

A lot of modern teaching equipment which will improve the school conditions to a large extent _______ to ten Hope Schools in South China．

--Why is the librarian looking so hard at me?
--You ______ to read aloud in the reading room.