wrote a letter of complaint(投诉)，and the airline have promised to _______the matter．

Can you hear me —No, I can’t. Would you please speak _________

What’s the matter with your boyfriend—I can’t stand _____when he often ignores me andtalks with other girls.

His explanation was so clear that everyone could understand it with ________

The young lady _________ we met yesterday is our new maths teacher.