To save water, the parents told their children ________ their teeth under a running tap.

Shanghai is bigger than_____ in Jiangsu and bigger than_______in China.

Mr. Ding, thank you _____ our English classes fun.—You’re welcome.[ ]

Hundreds of students came to Shaoxing to work _______ the World Choir Games in 2010, [ ]

“___ Libya’s oil production returns to normal, I guess, it will be fifteen months,” said a UN expert．