The water in the river nearby will be dirtier than before if nothing __________.
| A．has done | B．will be done |
| C．is done | D．was done |
Lucy enjoys playing computer games, but she can’t _______ lots of time ______ that.
| A．take; doing | B．spend; doing | C．spend; on doing | D．take; to do |
—Did Lisa invite you _____ her house?
—Sure, she did.
| A．at | B．for | C．to | D．in |
—Please remember, kids. ______ careful you are, _______mistakes you will make.
—We know, Mr. Li.
| A．the more; the little | B．the fewer; the more | C．the more; the fewer | D．the more; the less |
Tom often helps me ______my math after school.
| A．for | B．with | C．to | D．by |
Jimmy has sixteen broken bikes to________ and gives away to kids who don’t have bikes.
| A．fix up | B．set up | C．put up | D．get up |