a written permission, he had to write an
题型:选择题
问题:
a written permission, he had to write another letter to the president of the university.
A.Not giving
B.Not having been given
C.Having not given
D.Having not been given
a written permission, he had to write another letter to the president of the university.
A.Not giving
B.Not having been given
C.Having not given
D.Having not been given