It _______ Tom half an hour to do his homework
A.spends B.costs C.takes D.pays
We promise ______ rubbish on the ground.
A.to leave B.to not leave C.to throw D.not to leave
My cousin, Jack, is a good boy. He always _____other students.
A.helps B.is helping C.helped D.will help
—What about ______ to the cinema tomorrow evening?
—Good idea.
A.go B.goes C.going D.to go
We should keep the environment ____ and tidy.
A.clean B.beautifully C.slowly D.well
She ________ Shanghai on business.You can call her.
A.has been to B.has been C.has gone to D.has gone
