Something has to be done to stop the rivers from being further polluted, ?
| A.doesn’t it | B.hasn’t it | C.does it | D.has it | 
—Look! The telephone is broken. Someone damaged it ________ purpose.
 —That may be right. But perhaps it was broken ________ accident.
| A.on; by | B.by; by | 
| C.on; on | D.by; on | 
It's so nice to hear from her again.________,we last met more than fifteen years ago.
| A.What's more | B.That's to say | 
| C.In other words | D.Believe it or not | 
Mr White ________ at 8:30 for the meeting, but he didn’t show up.
| A.should have arrived | B.should arrive | 
| C.should be arriving | D.arrived | 
The old temple, _______ roof was damaged in the storm, is now under repair.
| A.where | B.which | C.its | D.whose | 
There was ______ time ______ I hated to go to school.
| A.a; that | B.the; that | 
| C.a; when | D.the; when |