He didn’t know（）to express her ideas in English clearly in public.

A. Convince the man that they should rest for a while.
B. Teach the man about the types of clouds.
C. Entertain the man with some interesting weather stories.
D. Persuade the man to turn around and go down the hill.

A. It always goes too fast.
C. It seems slower when one has too much to do.
B. It always goes too slowly.
D. It seems slower when one has little to do.