Jack is one of those men who_________ best evening and the most difficult situations.
| A．has | B．had | C．have | D．were |
Don't take __________ for granted that he will agree with you on the point.
| A．it | B．what |
| C．which | D．that |
One of the requirements for being admitted to the University is that you __________ the English test organized by it.
| A．will pass | B．would pass |
| C．pass | D．must pass |
With a lot of difficult problems __________，the newly-elected president is having a hard time.
A, settledB. settling
C. to settle D. being settled
So many uses have been discovered for this wood __________ the supply of white pine is becoming smaller and smaller.
| A．then | B．what |
| C．that | D．which |
—I wonder why Mr. Green hasn't showed up at the meeting yet.
—I'm not sure, but he __________ in a traffic jam driving here.
| A．could be stuck | B．might stick |
| C．might have been stuck | D．must have stuck |