---I don’t have a tennis racket, _____my brother has one. --- Let’s go to find him.
#56149
A
and
B
or
C
but
D
so
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Rick has learned a lot about Chinese culture _____ he came to China.
#55330
A
before
B
when
C
until
D
since
The police ____ still not sure ______ the young man killed himself or was killed.
#56977
A
is, if
B
is, whether
C
are , whether
D
are, that