问题补充:
It’s difficult that we shouldn’t spend all our time our favorite hobby.
A. to remember, in
B. to remember, on
C. remember, in
D. remembering, on
答案:
A. to remember, in
(答案→)B. to remember, on
C. remember, in
D. remembering, on
解析:考查句型It’s+ adj +to do sth,it作形式主语,真正的主语是后面的不定式,短语:spend time on sth,把时间花在某物上,句意:记住我们不应该把我们所有的时间 我们的业余爱好上是很难的。故选B。