—Do you like playing computer games?
—No, but I ______ .
| A．didn't use to | B．wasn't used to |
| C．was used | D．used to |
— My son seldom has breakfast.
— It is unhealthy habit. You must ask him to change it.
| A．/; an | B．the; an |
| C．/; a | D．the; a |
The doctor _______ on the man and _______ saved his life.
| A．did a operation; / | B．did an operation; was |
| C．operated; / | D．operated; was |
Students can’t be made ____________ all day.
| A．study | B．to study |
| C．studying | D．of study |
You know great changes _____________ in our school in the past ten years.
| A．have been taken place | B．took place |
| C．have taken place | D．were taken place |
Paul doesn’t know _________ about his problems.
| A．how to talk to | B．who to talk |
| C．where to talk to | D．who to talk to |