Why didn’t you buy the pen on your way home —Sorry, I forget ______money with me.

Little ______ that we were watching his everymove，so he seemed to be going his own wayin this business.

Someof the wheat is from Canada. What about

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

It was after he had read the requirements _______ Mr. Black realized the task was too difficult to be finished.