The fog was so heavy this morning that drivers could hardly ________ the things just ten meters away from them.

Mr. Wu is good ____ math. He teaches _____ math well.

I was scared _______ when I saw the tiger jumped outof the cage and ran to the little child.

It’s two years since they ____ each other， and they are going to get married next month.

_____no point in beating around the bush. Let’s ________.