问题补充:
If you don’t study English all the time, you’ll have a difficult time it in the future.
A. studying
B. to studying
C. studied
D. be studying
答案:
(答案→)A. studying
B. to studying
C. studied
D. be studying
解析:本题是固定词组搭配,即主语+have a adj time doing sth,故选A