下列各句中，加横线的成语使用恰当的一项是（ ）

In my family,our kids aren’t allowed to play outside _____they finish their homework.

Though____ with housework all day long, Julia managed to spare some time to learn Chinese

How long _________ in Shanghai? —For just the weekendI was back after the meeting was over.[ ]

下列交际用语使用得体的一项是