too

Sarah is planning to major in biology, and her twin brother is too.

(Chinese) 莎拉计划主修生物学，她的双胞胎哥哥也是。

I find this puzzle very challenging, and quite frustrating too.

(Chinese) 我觉得这个谜题很有挑战性，而且也挺让人沮丧的。

The water in the swimming pool was too cold for the children to stay in.

(Chinese) 游泳池里的水太冷了，孩子们没法待在里面。

You are driving too fast for these narrow and winding mountain roads.

(Chinese) 在这些狭窄弯曲的山路上，你开得太快了。