The boy is only four years old, but he can swim ______ the lake.

I want someone to write the composition for me.—No！As a student，you _______depend on yourself.

Almost ______of the students in this class, that is, __________of them wear glasses.

Your daughter has two children, doesn’t she?—That’s right; she for ten years.

I want to thank my friend John, without _____ help, I wouldn’t have been saved