Don’t litter the ground, boy. Look at the sign, “Rubbish must be thrown into the dustbin.”—Sorry, I’ll __________ right now.

Why can’t I smoke here?— At no time ____ in the meeting room.

Thank youyour great help. —You are.

After he became conscious, he remembered ____and ____ on the head with a rod.

He _____ that building,and just kept silence. [ ]