In the lecture, little Tom kept silent all the time unless _________ to express his opinion.
| A．he invited | B．he is invited |
| C．invited | D．being invited |
Had I been a little more careful，I such a foolish mistake.
| A．won't make | B．hadn't made |
| C．didn't make | D．wouldn't have made |
English is _____as Chinese.
| A．as difficult a subject |
| B．as a subject difficult |
| C．as subject difficult a |
| D．so subject a difficult |
________ we don’t care about ourselves, we don’t want our kids to live in a bad environment．
| A．In order that | B．Even if |
| C．In case | D．Now that |
It was in the lab ________I worked________they did the experiment.
| A．where；which | B．where；that |
| C．which；which | D．that；which |
Have you ever watched the film about a teacher who helped her student _____ after a car accident?
| A．recover | B．recognize | C．rescue | D．realize |