____ happens to the trees once the parties are over.?
| A．which | B．that | C．what | D．when |
This kind of cloth _______ well. I think it is worthy ________.
| A．washes; buying | B．is washed; buying |
| C．washes; to be bought | D．is washed; to be bought |
______has the children burdened with too much homework nowadays?
| A．It is who that | B．Who is it that |
| C．It was who that | D．Who was it that |
There are ____ to show that a new,different city is coming out of its dark past.
| A．signals | B．marks | C．signs | D．symbols |
—What’s up? You look down.—I have piles of papers ________, but I type so slowly.
| A．to be typed | B．typed | C．to type | D．being typed |
—I haven't got a mobile phone.
—I think you should have . It's useful for you.
| A．one | B．this | C．that | D．it |