你要问候别人的身体健康情况,应该说:A.How old are you? B.How are you?
What the elephant doing? A. isB. are C. am
The horse is . A. runB. runningC. running
Daming and Sam playing football. A. is B. are C. am
WhatSam and Amy doing? A. is B. areC. am
We can seeinteresting things. A. lot ofB. a lots of C. lots of