How do you say

By working out every day, he has built up his strength.

..in Chinese?

他每天坚持锻炼,已经增强了体能。

tā měi tiān jiān chí duàn liàn , yǐ jīng zēng qiáng le tǐ néng 。

How do you say "Which brand of clothes are you going to buy?" in Chinese?