A.on
B.by
C.at
D.in

A.the tired
B.the more tired
C.the most tired
D.the tireder

A.are providing
B.provided
C.provide
D.are provided

A.potential
B.potentiality
C.potentially
D.potention

A.ran out of
B.got out of
C.put out of
D.made out of

A.To plan
B.Having been planned
C.Having planned
D.To be planned

A.resolve a conflict over
B.voice opinions on
C.find favor with
D.express disapproval of

A.Yes, it's my favorite sport
B.Well, I love volleyball
C.I think it's boring
D.No, I don't

A.The difference of making new friends between girls and boys.
B.Social media affects friendship positively and negatively.
C.Teenagers are making and keeping friends in a surprising way.
D.Social friendship is longer and more open than a real-life one.

A.theoretical
B.integral
C.practical
D.technical