英语单选题,It is not very easy____math____It is not very easy____math__英语解答

英语单选题,It is not very easy____math____
It is not very easy____math____
A.learn,good B.to learn,well C.learn,well D.to learn,
求教

人气：466 ℃　时间：2019-09-22 09:21:19

解答

B
it's +adj.+ to do sth
修饰动词用副词.