It was not until midnight __________ they reached the camp site.
| A．that | B．when |
| C．while | D．as |
----Do you think that the housing price will keep ______ in the years to come? ------ Sorry; I’ve no idea．
| A．lifting up | B．going up | C．bringing up | D．growing up |
____team wins on Saturday will go through to the national championship．
| A．No matter what | B．No matter which | C．whatever | D．Whichever |
So difficult ___it to work out the problem that I decided to ask Tom for advice．
| A．I did find | B．did I find | C．I have found | D．have I found |
He ____ have finished his work; Otherwise, he would．not be enjoying himself by the seaside．
| A．should | B．must | C．couldn’t | D．can’t |
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 |