It was decades ago ________ I was in my teens ________ the Chinese government decided to reform the social economic system.
#4831
A
when; when
B
that; which
C
when; that
D
before; that
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They arrived at the farmhouse, in front of which _________.
#4812
A
is sitting a boy
B
sat a boy
C
a boy sat
D
a boy is sitting
    --- Playing table tennis.
#4835
A
killing time
B
to kill time
C
spending the time
D
to spend the time