Sheldon could have defeated Howard in th
题型:选择题
问题:
Sheldon could have defeated Howard in the match, but he _______ too careless at the last minute.
A.is
B.was
C.has been
D.had been
Sheldon could have defeated Howard in the match, but he _______ too careless at the last minute.
A.is
B.was
C.has been
D.had been