He failed the midterm examination and on
题型:选择题
问题:
He failed the midterm examination and only then ________how much time he had wasted.
A.he realized
B.did he realize
C.he had realized
D.had he realized
He failed the midterm examination and only then ________how much time he had wasted.
A.he realized
B.did he realize
C.he had realized
D.had he realized