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

Where have you been — I_______in the heavy traffic OtherwiseI_______ here earlier

It is said only three ____ of the students in our school ____ TV every day.

______ all the stars, the sun is _______ to the earth.

Did Peter fix the computer himself?— He _____, because he doesn’t know much about computers[ ]