It was in the lab ___was taken charge of by our teacher____ they did the experiment.
| A．which; that | B．where; which | C．which; where | D．that; where |
I met her quite ______.
| A．in accident | B．on accident | C．by accident | D．with accident |
If you lie to me, you could hardly _________ it.
| A．throw away | B．get away | C．get away from | D．get away with |
I ______ her, but I never could.
| A．ought to help | B．must help |
| C．must have helped | D．ought to have helped |
He ______ at once when I promised to help him.
| A．cheered up | B．gave up | C．lighted up | D．turned up |
We usually take turns ______cleaning ,and today it is my turn ____it
| A．to do; doing | B．doing; doing | C．doing ;to do | D．to do ;to do |