The Great Wall is __________ tourist attraction thatmillions of people pour in every year

Twenty percent of the water ______ from the underground(地下).

Excuse me, where is Children’s Park, please—Take the No. 5 bus and _____________ at the fifth bus stop.

Our teacher taught us that water ___ at zero degree centigtade

What are you doing, Mike? Be quick. — To be on the safe side, I’d bring some water, for the baby ____ feel thirsty on the way.[ ]