问题
选择题
I could have turned to Mr. Smith for help, but he ______ too busy then.
A.is
B.was
C.should be
D.has been
答案
答案:B
本题句意“我本可能救助鱼史密斯先生的,但是他那时实在太忙了”。本句中的could have turned说明了动作发生在过去,有but转折连词,导出了后句的事实性。
I could have turned to Mr. Smith for help, but he ______ too busy then.
A.is
B.was
C.should be
D.has been
答案:B
本题句意“我本可能救助鱼史密斯先生的,但是他那时实在太忙了”。本句中的could have turned说明了动作发生在过去,有but转折连词,导出了后句的事实性。