Only when one is（）of one’s getting behind is one more likely to catch up with the others.

He （）the good chance to present his proposal to the boss，and to his delight，it was adopted.

A.realized
B.seized
C.delivered
D.released

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When crossing a busy street，children should be very（）of the speeding cars.

A.ignorant
B.cautious
C.capable
D.Alert

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