1. Our English teacher,with some girls and boys in the class,______paying a visit to the library as the earthquake struck.
A.was B.were
C.had been D.would be
【答案】：A
本题考查主谓一致和时态。句中的with作状语，主语是the teacher，所以B项不对，再根据 when the earthquake struck可确定时态为一般过去时。
2. Every one of you ________accountable(负责任的) for the accident.
A. am B. be
C. is D. are
【答案】：C
解析：every one of you为单数概念，谓语动词用单数。
