We should protect the earth because it is ______ home.( )
A.weB.usC.ourD.ours
Teachers expect all their students ___________progress day by day.( )
A.to makeB.makeC.to takeD.take
Is this hat_______________?
No, the red one is_________.( )
A.Lucy's; herB.Lucy; her
C.Lucy's; hersD.Lucy; hers
Please remember to _________the electricity and water before you leave the laboratory.( )
A.take offB.shut offC.go offD.put off
Li Lei didn't play computer games last weekend.__________,he worked as a volunteer in an old people's home. ( )
A.InsteadB.CertainlyC.ThoughD.Gradually
You'd better not hang out after school _______telling your parents. They may worry about you.( )
A.byB.withC.withoutD.after