When he was running after his brother, the boy lost his __ _ and had a bad fall.

How often doyou chat with your friends online—. I’m busy with my study.

Helen hasn ‘t shown up so far.It’s five past seven.— It’s________of her to keep others waiting.Now,let’s go.I have no patience. [ ]

What makes you so upset, Mr. Wang– That John, a student in my class, ______ himself tocomputer games.

.Either the dean or the principal ______ the meeting