凯西拒绝走路去学校，而是选择骑自行车。

Cathy ___refuses to walk instead of riding her bike to school.

她请我借她一些钱，但我拒绝了。

She asked me to lend her some money, but I ___refused.

他遇到了麻烦，但他拒绝了我所有的帮助提议。

He's in trouble, but he ___refused all my offers of help.