Question 1. ______ the bomb attack had occurred did the lack of safety measures become obvious.
A. No sooner
B. Hardly when
C. Only after
D. Only by
Question 2 ______ the manager’s self-absorption, he has hardly been respected by many staff.
A. Because of
B. Because
C. Since
D. As
Question 3 . _______ the man in front of the bank had strange actions, I immediately reported it to the police.
A. Seeing that
B. Being seen that
C. Have seen that D. To see that