—Can you watch TV_____ school nights? —Y
问题:
—Can you watch TV _____ school nights?
—Yes, but I have to be _____ bed _____ ten o'clock.[ ]
A. in; on; by
B. on; on; in
C. on, in; by
D. in; in; at
—Can you watch TV _____ school nights?
—Yes, but I have to be _____ bed _____ ten o'clock.[ ]
A. in; on; by
B. on; on; in
C. on, in; by
D. in; in; at