题目内容：

 

1.Lots of free English ___________ (语法) exercises online can help you practise your English.

2.Roberta ___________ (出现) on the stage. She took a deep breath and began to sing.

3.I think everyone could understand the __________(总的) purpose of his speech yesterday.

4.We look forward to a high speed railway ____________(连接) Yangzhou to Nanjing.

5.There was a ___________ (日历) on the wall above, with large squares around the dates.