Question

 按要求转换句子,每空一词。

1. To keep our classroom clean is important. (用it改写句子)

________ ________ important ________ ________ our classroom clean.

2. The two boys are listening to the teacher in the classroom. (就划线部分提问)

________ ________ the two boys ________ in the classroom?

3. I have seen the tiger since 1999. (变为一般疑问句)

________ ________ ________ the tiger since 1999?

4. There are 29 kinds of animals in the zoo. (就划线部分提问)

________ ________ ________ ________ ________ ________ there in the zoo?

5. We shouldn't kill these birds. (变为否定祈使句)

________ ________ these birds.

Answer 1

1. It is, to keep 2. What are, doing 3. Have you seen

4. How many kinds of animals are 5. Don't kill