2.If Mary ( ), tell her I＇ll call her back as soon as I return.

7. Let＇s try a bit harder, ( )?

6. "It＇s awfully cold this morning."“Yes, but it＇s not colder than it was yesterday, ( ) it?"

5. Beginners have to learn from their mistakes, ( ) they?

4. "Jill has a toothache."“It＇s been hurting her for quite a while, ( )?"

3. Mountains can be very dangerous, ( )?

2. I don＇t think you＇ve heard of him before, ( )?

1. You never told us his phone number, ( )?

2.It is suggested that ( ) a while before we make a decision.

5.It is high time ( ) about the traffic problem

4.Mary wishes that she ( ) law instead of history when she was in college.