Jack swims very fast .Mike swims faster than jack.(理解句意,填空) Mike is （）at（）tha jack.

Jack swims very fast .Mike swims faster than jack.(理解句意,填空)Mike is （better）at（swimming ）than jack.Mike （does） （better） in （swimming ）than jack.注：句中有than 要用比较级,be good at doin...