---Three people got killed by two explosions.---When was __________?---________ was on April 15 __________ the 2013 Boston Marathon was being held.
My brother gets a_______out of collecting coins and he has got a very large collection.
-Why not have a meeting to discuss about it? -_______
People nowadays spend_______they used to but buy less food, especially meat.
With the quality-oriented education being carried out, teachers won’t _______too much importance to students’ grades.
Don’t call me at 9:00 o’clock tomorrow morning ,when I_______a lecture at Harvard.