With more forests being destroyed , huge quantities of good earth each year .
| A．is washing away | B．is being washed away |
| C．are washing away | D．are being washed away |
I shall be in china for three weeks. Can you make some suggestions _____ what I should see?
| A．or else | B．as to | C．so as to | D．up to |
_____ is known to us all is that America is a developed country _____ the First World.
| A．Which; belonging to | B．as; belonging to |
| C．what; belonging to | D．It; belonging to |
Hidden _____ by a big tree, his house was not to be seen.
| A．as it was | B．as it is | C．as it did | D．as he did |
_________ is known to all，good friends _________ happiness and value to life.
| A．It； add | B．As； add | C．It； add up | D．As； add to |
There at the door stood a girl about the same height__________.
| A．as me | B．as mine | C．with mine | D．with me |