—Shall I help clean the kitchen, Mum?—Thank you.But you ________ it because I can do it myself.

While watching television, __________.

Environmentalists urged that more effective measures ___________by the government to reduce the pollution.

“I thought you wouldn’t mind.” “Well, as a matter of fact I don’t, but you _____ me first.” 

— Chinese Premier Wen put great pressure on the Japanese side, otherwise the boat captain ___________． — As the saying goes, he who hasn’t seen the coffin （棺材） won’t cry．