About 270 million people in rural areas in China have no to safe drinking water.
All things____________, her paper is of great value.
The meeting was to_________ but the manager________ until twenty minutes later.
Was it through Mary__________ was working at a high school_________ you got to know Bob?
The new manager is intelligent and hard-working, and___________, he is very charming.
I don’t doubt that the price of the red apples is higher than___________ of the yellow__________ in this area.