The world’s elderly population will exceed(超过) ____ of children by 2060, when each group ____ to account for about one fifth of the population.
—Mom,dad is smoking again! —Well,let him cut it ________ gradually since old habits die hard.
The General Manager suggests those found ______ in the office would be fired immediately.
The child should be punished. You shouldn’t let him ________ telling lies
Tom’s parents died when he was a child, so he was ______ by his relatives.
The letter she had been looking forward to _______ her yesterday.