选词填空，完成下面句子。
A. ignorance B. transformation C. guarantee D. federal
E. omit F. assured G. insure n. switched
I. interview J. generate K. faded L. instruct
M. grasp N. graduate O. forbid We do not have a ______ school in our institute. The highest degree we provide for the students is a B. A. and a B. S.