_______ we clean the classroom atonce — No, you _______. You _______ clean it after school.

___ to feel unworthy, children oftenwork extra hard to please their parents．

rry, but there is no smoking on this flight.—Oh, I _____that. Sorry, I won’t again.

Was it in the library ________he often went to do some reading ________he met the pretty girl

Mrs. Smith found the toys here and there, so she asked her son to ______ his toys before having dinner.