__ eye exercise __ good __ your eyes.为什么?A.doing__ eye exercise __ good __ your eyes.为什么?A.doing,are,forB.do,is,forC.doing,is,forD.do,are,to

问题描述:

__ eye exercise __ good __ your eyes.为什么?A.doing
__ eye exercise __ good __ your eyes.为什么?
A.doing,are,for
B.do,is,for
C.doing,is,for
D.do,are,to