We ________ fight against pollution.

The famous reporter, who is said to have gone back to America last year, _____in China for almost twenty years

．I don’t suppose they’ll be seeing each other very often since she’s accepted that job in London,___________?

Put your money away. It’s on me. I wouldn’t hear of it.—-If you insist, but next time it’s my __________.

before______ such a wonderful park, ______ I’d like to pay a visit again.