There     lots of people at the restaurant when 1 got there.

________is dangerous for us to swim in the river alone.

--- Mr. Wang’s never been to Canada, has he?---           . He went there on business last week.

.---Your brother doesn’t get up early, does he?   --- _______. But he gets up late on weekends.

--- Datou Ge Hongyu made few mistakes in the competition of singing, ________ ? --- _____________. I think his perform was the most wonderful in The Voice of China.