You should do more-------.Do not always sit at the desk busy doin_英语解答

You should do more-------.
Do not always sit at the desk busy doing your -----.
A exercise; exercises
B exercises; exercise
c exercises; exercises
D exercise; exercise

人气：333 ℃　时间：2020-05-11 13:31:19

解答

应该是A ,因为前者是运动的意思,只能用单数,后者是做具体的作业,习题的意思,所以用复数.