A. on; in
B. in; on
C. on; at
D. at; on

1. Listen! Who             (sing) in the next room?
2. Jane             (not watch) TV every day.
3. They             (pick) pears on the farm last week.
4. Shall I             (close) the door?
5. I'll go to the park if it             (not rain) tomorrow.
6. I'd like you             (meet) my parents.
7. Would you help me             (carry) the box?
8. I don't like             (sit) on Tom's right.
9. Don't keep the boys             (wait) so long.
10. What do you say when someone             (meet) you for the first time?