I wonder why Jack always gets good marks when he does only ______ the others [ ]

doyou know so much about the UFO?—I usually get the information by surfing theInternet.

. She asked the man _______ it was true he had been a soldier before.

Sometimes we just can’t understand why so many peoplefail to realize that wealth does not ______ bring happiness

He found it impossible to please his boss; ____, he quit the well-paid job