题目内容：

 

1.People can’t drink the water in the river because it’s badly______ (污染).

2.In England, we should avoid ___ (问) people questions about their age.

3.It’s important to form a ___ (习惯) of reading English every day.

4.Though he has learnt English for a long time, he can ___ (几乎不) speak it.

5.Food ___ (安全) has become the most serious problem people care about.