About _______ of the surface of the earth _______ covered with water.
| A．three quarter, is | B．three quarters, has | C．three quarters, is | D．three quarter, are |
|
I intended to compare notes with a friend, but unfortunately ________ couldn’t spare even one minute．
| A．they | B．one | C．who | D．it |
__________ I explained on the phone, your request will be considered at the next meeting.
| A．Which | B．That | C．What | D．As |
—What are you going to do this afternoon?
—I’ll probably go for a walk later on __________ it stays fine.
| A．as far as | B．so long as | C．even if | D．as though |
We must take all possible measures _________ to improve working conditions.
| A．tend | B．tending | C．tended | D．being tended |
The description was pretty __________, so the police couldn’t figure out the portrait of the criminal.
| A．vague | B．accurate | C．particular | D．vain |