Students often ask the teacher ____ help.[ ]
Are you good_____ your classmates?[ ]
___ research ___ the universe scientists have put a lot of information ___ computers. [ ]
______haveyoubeenawayfromyourhometown, Janet? —Since5yearsago.[ ]
Don’t litter the ground, boy. Look at the sign, “Rubbish must be thrown into the dustbin.”—Sorry, I’ll __________ right now.