My knowledge of Hong Kong came only from some movies:a---- o

My knowledge of Hong Kong came only from some movies:a____ of criminals are pursued by the police in the narrow streets and then they have a fight.
A.group
B.team
C.class
D.gang
After many years' waiting,Chinese people____ realized their dream to hold the Olympic Games.
A.constantly
B.eventually
C.lastly
D.generally
He is ________ about his chances of winning a gold medal in the Olympics next year.
A.optimistic
B.optional
C.outstanding
D.obvious
More and more students are______ this modern type of instruction
A.resulting from
B.figuring out
C.benefiting from
D.bringing up