前轮转弯有哪些部件控制？

______ cleans the blackboard is to be praised.

Please put the magazines ______.

The question is ______ the film is worth seeing.

You talk as if you ___ there.

If I had known that, I ___ so.

The foreign tourists have visited many scenic spots in Shanghai, _____ as interpreter

Once _____ at the shop, you will be dismissed immediately.

What Yang Liwei wanted to do when he got out of the spaceship was _____ the joy with all the Chinese.

—Mum, why do you give me so much popcorn?  —_____ the boring time.

There was a famous person at the party whom everyone would like _____ to themselves.