I usually clean my room and wear my clothes on Saturday.这句话有错误吗?

题目

I usually clean my room and wear my clothes on Saturday.这句话有错误吗?
还有：
I like dolphins because they are very friendly and clever.
I still relax my first day at school.
She is not late for school.
这些呢？
I usually clean my room and wear my clothes on Saturdays。
少打了个s，sorry。
重点在这些词上，看这些词用错了没：
第一句的(very friendly)
第二句的（I still relax ）
第三句的（She is not late ）
第四句的（wear my clothes ）

答案