.healthy exercise it is to go jogging!
问题描述：
.healthy exercise it is to go jogging!
A.how
B.what
C.what a
D.what an
选什么,这种情况下,exercise可数吗?
答
选B.这是感叹句型,考察how和what a/an的区别.由于后面的exercise做锻炼讲的时候是不可数的,所以省略了a/an.
exercise做练习题讲的时候,是可数名词,可以加复数、做早操时可数吗？做早操，眼保健操，练习都是可数的。do morning exercises做运动不可数，比如 do exercise。