Better _____ all the lights are turned off before you leave the classroom．
| A．to be sure | B．to make sure | C．be sure | D．make sure |
相关试题
—Shall he come today or tomorrow?
—Up to him．It makes noto me．
| A．meaning | B．trouble | C．relation | D．difference |
If you the medicine, you better now.
| A．took, would feel | B．had taken, felt |
| C．had taken, would feel | D．took, would have felt |
All the preparations for the work_______, we’re ready to start.
| A．are completed | B．have been completed |
| C．completed | D．had been completed |
It’s said that
the teamtwelve top European players．
| A．consists of | B．is consisted of |
| C．are made up of | D．make up of |
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