Lily isn’t here. When _________ she ___________.

—I can’t find my seat. Could you show me，sir?—________. May I see your ticket，please?

—Young kids shouldn’t go swimming alone.—__________. It’s too dangerous.

----Could you get home at five o’clock? ---- ________I’ll have a meeting at that time .

—It’s difficult for the villagers to cross the river for market.—I think a bridge _________ over the river.