第三课时　Section A —单元同步语法精讲精练
一、用括号内所给单词的适当形式填空。
1．When I got to school yesterday morning，it ________ (rain) hard.

2．—Can you play the piano?
—Yes，I can.I often ________ (practice) it on weekends.

3．Keep practicing and you ________ (improve) your English.

4．Sam has studied Chinese since he ________ (come) to China.

5．—Must I tell John about the school trip?
—No，you needn't.I ________ (tell) him already.

6．We are ________ (make) model planes these days.
.was raining
practice
will  ...