Shanghai, China’s biggest and the most dynamic city, which______ in the Yangtze River Delta, is playing a leading role in the country’s economy. 

Larry, we’re glad you ______. We were beginning to drive to the station to meet you.

 ---This is the first time I _____ my first picture with my own hands. --- It’s time that you ____ a photo of me.

.Three-fourths of the surface of the earth_________sea.

The wet weather will continue tomorrow when a cold front ______ to arrive.