Every minute has been made full ______ of by the girls ______ knowledge about etiquette(礼仪).

______ the students like the paintings. Which is right? [ ]

We asked the teacher to explain _______.

How dangerous it was!—Yes，but for the young man’s quick action，he_________ run over by the car．

Making great efforts to struggle hard in your study，if ______，will possiblylead to your great success in the college entrance exam next year.