题目

题型：同步题难度：来源：

用括号内所给单词的适当形式填空。1. This toy Is not____(suit) for young children.
2. There____(use) to be a lot of birds here, but now we can hardly see them.
3. The heavy rain stopped the visitors____  (climb) the mountain.
4. They often collect waste paper and bottles for____(recycle) to protect the environment,
5.--What"re they doing?
   --They"re____ (wait) for a bus.

答案

1.suitable  2.used  3.climbing    4. recycling 5. waiting