题目内容：

 

1.I think there is no ________ (联系) between the two things.

2.Sandy _________(争论) with her brother about this question just now.

3.They will visit the country again at a _________(恰当的) time.

4.—I am not clear about this question. Can you ________it for me?

—Sure.

5.There are lots of black _______in the sky. I think it's going to rain.

6.Betty is really a shy girl. She always feels ________when she speaks in front of people.