The teacher frowned ___ annoyance when a student fell asleep during his lesson

. Put the books back _______ they belong after you have finished them.

Mike, what did our monitor say just now? — Every boy and every girl as well as the teachers who _____ to visit the museum _____ asked to be at the school gate before 6:30 in the morning.

下列各句中，没有语病的一句是（ ）

Could you come back home at three o’clock—_________. I will have a meeting at half past two and it will last two hours.