The English teacher her students how to improve their comprehension skill since last week.
| A．has told | B．is telling | C．has been telling | D．will have told |
The more one is_______ the English-speaking environment, the better he or she will learn the language.
| A．exposed to | B．filled in | C．caught on | D．kept up |
It’s time that you_____with the relief work in the flood-stricken area after the awful typhoon.
| A．must help | B．can help | C．helped | D．have helped |
Drunk driving, which was once a frequent occurrence, is now______.
| A．under debate | B．under control | C．under construction | D．under investigation |
_____snacks and drinks, but they also brought cards for entertainment when they had a picnic in the forest.
| A．Not only did they bring | B．Not only they brought |
| C．Not only brought they | D．Not only they did bring |
When they had finished playing, the children were made to _______ all the toys they had taken out.
| A．put off | B．put up | C．put down | D．put away |