____ was known to them all that Bob had broken his promise ____ he would give them a rise.
| A．As; which | B．What; that | C．It; that | D．It; which |
—Do you regret paying twenty dollars for the dictionary?
—No．I ____ twice as much for it．
| A．gladly paid | B．should gladly pay |
| C．would gladly have paid | D．had gladly paid |
I am wondering ____ he expects will win the gold medal in Men's Single．
| A．whom | B．who | C．which | D．what |
The witness who appeared in court ____ to speak out the truth instead of covering it up．
| A．encouraged | B．has been encouraging |
| C．was encouraging | D．had been encouraged |
Several years ago they found in England a tomb of a man ____ from around 2,300 B．C．
A．dated B．dating C．dates D．to date
—Why did you leave the water running in the sink?
—My goodness! I guess I ____ to turn off the tap．
| A．forgot | B．have forgotten | C．forget | D．had forgottten |