Expertshavebeenwarningofthehea

Experts have been warning _____ of the health risks caused by passive smoking.

A．at a time

B．at one time

C．for some time

D．for the time

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The children were warned of not being too __________ about things they are not supposed to know.

A．strange

B．amusing

C．curious

D．satisfied

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Please don’t phone him between 1 and 3 p.m. tomorrow. He _________ a lecture then.

A．has delivered

B．has been delivering

C．will be delivering

D．delivers

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In a sport team each player has a clear role, and there are few occasions ______ members are confused or uncertain of their roles.

A．why

B．where

C．when

D．in which

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It is the test system, _____ the teachers, that is to blame for the heavy burden of middle school students nowadays.

A．other than

B．or rather

C．rather than

D．more than

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With the help of his friends, he has _____a good business over the years.

A．built up

B．made up

C．grown up

D．picked up

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