— It is said that the cycling race around the Qinghai Lake was very hard. — So it was. Only a handful of cyclists made _______. 

I’m moving to the countryside because the air there is much fresher than ________ in the city.

I think this trip was well worth _____we had paid.

— Sorry, Mr. Green. Jim can't take part in the relay race because he's ill.— It doesn't matter. I'll ask ___ to go instead of him.

In societies where social roles are determined, boys usually copy the behavior of their fathers, and girls usually also copy _____ of their mothers.