There __________ some children in the painting room. They are studying painting. 
#41591
A
is
B
are
C
am
D
was
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There       a math test tomorrow.
#39904
A
will have
B
is going to have
C
has
D
is going to be
 —Do John and Betty have a child? —Yes. They _______ for twenty years.
#42622
A
married
B
have married
C
have got married
D
have been married