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14.We should try to keep everything around US clean and then flu will find it
_to spread.
A.difficult
C.difficultly
15.Be careful with you eat and drink.
C.who
B.difficulty
D.difficulties
A.what
B.that
D.this
16.Eating a lot of junk food may lead to your
A.obesity
17.We should follow the advice from doctors and health
B.fitness
C.pain
D.stomachache
in order to keep fit.
D.experts
A.people
18.Have a healthy.
C.managers
_and you can enjoy your life.
C.lifeline
B.workers
A.lives
B.lifestyle
D.lively