The number of foreign students attending Chinese universities ________ rising steadily since1990.  
#86347
A
is
B
are
C
has been
D
have been
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In that terrible earthquake, ______ who were killed ______ more than 20,000.
#85801
A
the number of people; was
B
a number of people; were
C
many people; were
D
the number of people; were
. If law and order _____, neither the citizen nor his family is safe.
#86051
A
are not preserved
B
is not preserved
C
were not preserved
D
have not been preserved
 This kind of IPod _______ well in China and it is popular with students.
#86013
A
is sold
B
has been sold
C
sells
D
has sold