Why are you standing, Alice—I can’t see the blackboard clearly. Two tall boys are sitting_______me.

Boys and girls, be sure bother others in public places, then you will be liked by others.

We arrived home at 9:00 in the evening, __________most people had already had supper.

The old man has three sons，and two _____ are doctors

When we went into the park, we saw someone _____ Chinese Kungfu.