--- Why haven’t you asked Lisa to come here?
--- She was writing a paper when I found her and she ______ it.
| A． hasn’t finished | B． didn’t finish | C． wouldn’t finish | D． hadn’t finished |
Thefreezingpointisthetemperature__________waterchangesintoice.
| A．atwhich | B．when | C．inwhich | D．ofwhich |
Don’t talk about such things _______ you are not sure about.
| A．which | B．that | C．as | D．what |
Hurry! The train _______. You know it _____at 8:30am. .
| A．leaves; leaves | B．is leaving; leaves |
| C．leaves; leaving | D．is leaving; is leaving |
With the help of high technology, more and more substances _________ in the past years.
| A．discovered | B．have discovered |
| C．had been discovered | D．have been discovered |
Jim is the only one of the policemen in his office who __________ the award.
| A．have won | B．win | C．has won | D．was to win |