第一节单项填空
1. Carol said the work would be done by October, ______personally I doubt very much.
A. it B. that C. when D. which
2. ______ is mentioned above, the number of the students in senior schools is increasing.
A. Which B. As C. That D. It
3. This is the factory _______we visited last year.
A. where B. which C. the one D. at which
