—When did you come back?
—An hour ago. You the computer games.
| A.have played | B.were playing | C.played | D.had played |
-Have you __________ how much the trip will cost?
-I'm working on it; just have a little patience.
| A.added to |
| B.counted on |
| C.added up to |
| D.figured out |
The news shocked the public,__________ to great concern about students' safety at school.
| A.having led |
| B.led |
| C.leading |
| D.to lead |
Plastic bags are provided for our convenience but they have also __________ the pollution of the environment.
| A.referred to |
| B.led to |
| C.reacted to |
| D.attended to |
Look over there-there's a very long, winding path __________ up to the house.
| A.leading |
| B.leads |
| C.led |
| D.to lead |
The printer is of good quality. _____ it break down within the first year, we would repair it at our expense.
| A.Would | B.Could | C.Might | D.Should |