My brother is a fast runner.

My brother is a fast runner.

A. My brother runs fast.

B. My brother runs fastly.

C. My brother ran fast.

D. My brother ran fastly.
Xem đáp án
Đáp án: A
Giải thích: fast (adv): nhanh
Dịch: Anh trai tôi chạy nhanh.