I Fill in the blanks with the right forms of the given words.
1. Look! Sarah and Lucy (play) badminton on the playground.
2. Be quiet, please. The baby (sleep) in the next room.
3. — Where are the students?
— They (have) a music class.
4. — May I use your computer?
— I'm afraid not. I (use) it.
5. Look! She (lie) under the tree, looking into the sky.

1. are playing 2. is sleeping 3. are having 4. am using 5. is lying

1. 句首“Look!”提示动作正在进行，主语“Sarah and Lucy”是复数，be动词用are，play的现在分词是playing，故填are playing。
2. “Be quiet”提示动作正在进行，主语“The baby”是单数，be动词用is，sleep的现在分词是sleeping，故填is sleeping。
3. 问句询问学生在哪里，答句说明正在上音乐课，主语“They”是复数，be动词用are，have的现在分词是having，故填are having。
4. 回答“恐怕不行”，说明正在使用电脑，主语“I”后be动词用am，use的现在分词是using，故填am using。
5. “Look!”提示动作正在进行，主语“She”是单数，be动词用is，lie的现在分词是lying，故填is lying。

Ⅱ.Complete the sentences according to the requirements.
1. Lily is studying English these years. (改成否定句形式)
.
2. The children are playing football. (改成一般疑问句)
.
3. Laura is reading a book. (对画线部分提问)
.
4. My mother is shopping in Wangfujing Street. (对画线部分提问)
.
5. Miss Wang had a meeting yesterday afternoon. (用at the moment改写句子)
.

1. Lily is not studying English these years.
2. Are the children playing football?
3. What is Laura doing?
4. Where is your mother shopping?
5. Miss Wang is having a meeting at the moment.