What is learned in books cannot have the same deep effect _____ a child’s character as what is learned _____ experience

Who ________ for the bullet train accident that has happened in Zhejiang,China?

You cI promise _______ else can you find another one at such a lowprice with the same configuration.

Some researchers believe that there is no doubt______acure for AIDS will be found.

___ the teachers in their school is about 200 and one fourth of them are ____ teachers.