Q:please finish the following blanks with the right form of the words given. allow; discover; destroy; experience; hiberate We ________ that he is quite careful in his work. These poor buildings need ________ because of the problem of safety. In this school, students _______ not _______ stay out at night except in their holidays. Do you know what kinds of caves the American Black Bears use ________ in the cold winter? I _______ both happiness and sadness in the past 10 years when I was abroad.