---Three people got killed by two explosions.---When was __________?---________ was on April 15 __________ the 2013 Boston Marathon was being held.
---Does Tom do his new job well? ---______ his old job. How stupid! I think there is no hope for him.
What do you think of the reason _______ he mentioned at the meeting _______ winning this competition?
The villagers _______ closing down the factory, but till now the local government hasn’t _______to it.
I do hope the film ______ tomorrow will be much more wonderful than the one _____ yesterday.
Do you know the Three Gorges Dam is the largest hydro-electric dam ever_______?