Safety in school has been of great concern because of frequent reports about accidents _______ students got injured or killed while in school ．
| A．that | B．when | C．in which | D．for which |
Take on a(n)_______ with you. It looks like raining.
| A．underwear | B．overcoat | C．water-proof jacket | D．umbrella |
The road constant improvements can't keep pace with the increasing ____ .
| A．trucks | B．private cars | C．buses | D．traffic |
We should take good care of our ____. Don't forget to rinse your mouth after meals.
| A．toes | B．eyes | C．hands | D．teeth |
Records, ____, walkman CD and MD are the same instruments that we can use to enjoy music.
| A．tapes | B．hammers | C．diamonds | D．telegram |
The limited supply of water has been put into practice, take care to turn off the running ____ before you leave.
| A．radio | B．traffic lights | C．gas | D．tap |