More and more people are using iPhone _________ by Steve Jobs to connect with others.
#44814
A
create
B
creates
C
creating
D
created
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People should _____ from throwing the rubbish everywhere .
#44661
A
be stopped
B
stopped
C
stop
D
stopping
Ann and I   doing   homework now.
#44773
A
am ,their
B
are ,their
C
are ,our
D
am ,our
 Personal computers ______ in 1976. It has changed the whole world.
#44711
A
have invented
B
were invented
C
is invented
D
invented