问题
I _____ the way. I ______ here for quite many years.
A:unless
B:if
C:until
D:while;
B:if
C:until
D:while;
正确答案是：
同类题型
The detective and his assistant have begunto the mysterious murder.
. She gets three weeks of vacation, but has ____ before the year is half over.
Lauren Smith was completely_____ in watching TV, so she didn’t hear the step downstairs.
He was busily ________to cleaning his shoes while his wife was cooking.