问题

It’s easy enough ______ out this problem. You needn’t go to the teacher.
A:working
B:work
C:to work
D:works;
B:work
C:to work
D:works;
正确答案是:
同类题型
raise to yourself,____ you’ll build upconfidence throughout the difficult times
.You should take __________ measures to avoid danger when doing exercise.
Has your sister finished watching the new film______ Yes, she has finished it ________.
If you go to the post office, would you please get me a stamp?–I am ___ willing to.