Not having work out the problem, leave the office. [ ]
A. so he was not allowed to
B. and he didn't want to
C. the teacher couldn't make him
D. he couldn't free himself to
答案:D
Not having work out the problem, leave the office. [ ]
A. so he was not allowed to
B. and he didn't want to
C. the teacher couldn't make him
D. he couldn't free himself to
答案:D