We are confident that the environment ________ by ourfurther efforts to reduce pollution

When shall I pay the bill —Don’t mind it, sir.__________.

Dad, I’d like to go to the cinema withyou.— Sorry, dear, but the film is _____ adultsonly.

When was Tom bitten by a snake—It was on a Sunday _______ he was taking a trip to the mountainous area.

have also learned to_________ whole sentences without trying to translate them word for word into Chinese.