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 . 他因为工作压力过大，他患上抑郁症，这给我们所有人敲了一个警钟。(consequence；warning；非限制性定语从句) （汉译英）

3 . During my stay in America, I lived in university accommodation with other international students, ________ allows me to meet people from diverse cultural backgrounds.

A．who

B．what

C．which

D．that

4 . 正如我们在新闻所看到的，这位作家被控泄露他人隐私。(charge ，非限定性定语从句) （汉译英）

5 . Some Americans volunteer as foster parents caring for migrant children, many of ________ arrived with trauma (精神创伤).

A．them

B．which

C．whom

D．that