When the bell rang, the students were all sitting on their own seats quietly and looking forward to their new Chinese teacher.
A. have seen
B. be seen
C. see
D. seeing
网友回答
A. have seen
B. be seen
C. see
(答案→)D. seeing
解析：考查短语的用法。look forward to 期盼，期待，to 为介词，后接n/doing ,考点：考查短语的用法。