题目内容：

1 

选择括号内恰当的单词填入空白处,使句意完整正确。

1.Lu Xun is known _______ (as/ for) a great writer.

2.The terrible gas makes people hard to ________ (breath/ breathe).

3. ________ (Once/ Unless) people start taking drugs, it will be hard for them to stop.

4. The program__________ (offer/ provides) homeless children with house and food.

5. Most people in China can get good ________ (medicine/ medical) care.