问题
选择题
As I ________ the next day, I ________ to bed early that evening.
A．left; went
B．am leaving; go
C．was to leave; went
D．had left; went
答案
C
由that evening可知主句用过去时；由the next day可知从句用过去将来时。“be to + 动词原形”表示将来。