Shanghai is the first city in the world ____a high-speed maglev train, from the city to Pudong Airport.
Look! Here come the dark clouds. It______ rain.
______ fast did John run ______ I could hardly catch him.
It’s known to us all that the deeper you dive, ________ you can breathe.
It’s the third time _____ arrived late this month.
The Golden Gate Bridge, _______ several hundred years ago, is worldwide famous.