People have planted a great many trees in order to________wind and sand in the desert.[ ]

I ______ for London tonight, for there is ______ an important meeting there.

Tom put his heart into the wildlife research, and finally, his efforts ______ him great success and fame.[ ]

.The old man argued _____ the taxi driver ____ the fare

“How long do you suppose it is _______ heleft for Japan” “No more than half a month”