I met her quite ______.
| A．in accident | B．on accident | C．by accident | D．with accident |
Either you or one of your family members __________the opening ceremony next week.
| A．attends | B．attend | C．is to attend | D．are to attend |
Our class discussed the question of __________it is necessary for us students to use mobile phones on campus.
| A．if | B．where | C．whether | D．that |
—Peter, your hair is getting much too long. It’s high time you __________it cut.
—OK. I will.
| A．have | B．had | C．have had | D．will have |
__________people relaxation and pleasure, but it can also increase their knowledge of any kind.
| A．Not only can travel give | B．Not only can give travel |
| C．Not only travel can give | D．Not only travel gives |
It was in the lab __________was in the charge of Professor Smith __________they carried out the experiment.
| A．where；that | B．which；where | C．that；where | D．which；that |