About 75% percent of the students can go swimming the rest can’t.
A. while B. and C. or
I don’t think he is clever,?
| A．do I | B．do you | C．is he | D．isn’t he |
I don’t think should be allowed to drive.
| A．sixteen-year-old | B．sixteen-years-old |
| C．sixteen-years-olds | D．sixteen-year-olds |
—Which university do you want to enter?
—It’s hard for mea decision.
| A．do | B．to do | C．make | D．to make |
He is __________ unusual inventor and he invented _________ useful invention.
A. a; an B. a; a C. an; an D, an; a
I didn’t know __________. Can you tell me?
| A．who to speak to | B．who speak to |
| C．who to speak | D．who spoke |