问题
Jim was seen ______ in the library from 3p.m. to 5p.m yesterday.He is often noticed _____ the library.
A:reading, to enter
B:to read, to enter into
C:reading, enter
D:to read, entering into;
B:to read, to enter into
C:reading, enter
D:to read, entering into;
正确答案是：
