单项选择题
When we were having a meeting, the director（）the bad news by telephone.
A.was telling B.was told C.could tell D.would tell
单项选择题 Our lab was being（）when we visited the university.
单项选择题 Everything（）if Albert hadn't called the fire brigade.
单项选择题 If the man（）succeed，he must work as hard as he can.
