1 . Sitting in the lecture hall          a number of committed teachers,         attention was on an outstanding teacher’s lesson.

A．were, their

B．was, whose

C．was, their

D．were, whose

2 . My best friend Tina helped me a lot in time of difficulty, without ______ support I wouldn’t have walked out of the life shadow.

A．that

B．which

C．whom

D．whose