I ride my bike to my office and I in my car on rainy days.I walk to my office and I ride a bus on rainy days.I on foot to my office and I take a bus on rainy days.

问题描述:

I ride my bike to my office and I in my car on rainy days.
I walk to my office and I ride a bus on rainy days.
I on foot to my office and I take a bus on rainy days.

I usually ride my bike to my office, but on rainy days I would drive instead.

Wrong.
I usually cycling to work, but in rainy days I will use my car.

I ride my bike to my office and I am in my car on rainy days

这句话这样表达比较好。
I always go to work by bike, but when it rains, I will drive my car.