A. kids loving to play games online
B. only victims of Internet use
C. kids and their parents who want to learn about the safety online
D. pre-school students who know little about Internet
A.took back; golden
B.has taken back; gold
C.has taken back; golden
D.took back; gold
A. on
B. off
C. from
D. against
A. favorable
B. favorably
C. favor
D. favorite
A.make; rather
B.makes; more
C.made; rather
D.make; more
A. are; when
B. is; what
C. is; where
D. are; why
had stayed
have stayed
stayed
stay
A. a; /
B. a; the
C. the; the
D. /; /
A.it
B.its
C.their
D.them
A. bill
B. balance
C. amount
D. money
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