—The number of the students in our school is about nine ____. ____ of them are boys.—I think so.
Li Ming, you can ____ my book, but you’d better not __ it to others.
The sun will set_______ about fifteen minutes
It’s a fine day. Let’s have a walk ______ the sunlight.
Would you please ________ the cup of coffee?
Two ______ trees have been planted along the lake since 1998.