A clean environment can help the city bid for the Olympics, which ____ will promote its economic development.
In communication, a smile is usually________ strong sign of a friendly and ________ open attitude.
He ________up early and cook breakfast for himself when he lived alone ,
After the introduction of the modern equipment, the factory produced _______ cars as the year before.
I was crazy because it _____me two hours to get_____ in the restaurant the other day.
Sam _____ some knowledge of the computer just by watching others working on it.