To students ,the most important thing is---- their lessonsA.worki_英语解答

To students ,the most important thing is---- their lessons
A.working hard
B.working hard to
C.to work hard
D.to work hard at

人气：155 ℃　时间：2020-04-13 09:20:17

解答

D,to work hard at.整个做is后面的表语
这里需要介词at来说明努力做得事情