—Miss Li has taught ____ English for about 3years.—You are lucky. ____ is a very good teacher.
We offered these students a summer course ,aimed _____ improving their spoken English.
--I can’t find John .Where did you meet him this morning? -- It was in the hotel _____ he stayed.
.Don't ____ when other people are talking.
After supper she would sit down by the fire , sometimes for _____an hour , thinking of her young and happy days.
It was several minutes before I was ____ of what was happening.