26.He never regretted the anxious hours
题型:选择题
问题:
26.He never regretted the anxious hours he had had ______ for the missing papers.
A.search
B.searching
C.searched
D.to search
26.He never regretted the anxious hours he had had ______ for the missing papers.
A.search
B.searching
C.searched
D.to search