The environment is becoming worse and worse. I think we should do something to ____ people ____ cutting the trees in order to protect the earth.

I don’t work here full-timeI ________ temporarily

Is this science lab ___ some foreignexperts visited lastFriday

The classroom looks like a mess!– Yes, but who left the waste paper ______ around?

Her parents will send her away becauseshe got a bad mark in the exam.— _______