Question

—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

Answer 1

C

此题重点考查介词的固定用法。On school nights；in bed；at ten o’clock。