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Who taught ________ maths last year?
their
they
them
theirs
Who taught ______ math last year?
A．they B．their C．them D．theirs
These postcards are ________.
A．they B．theirs C．their D．them
Who buys a nice present?
A．they
B．them
C．their
D．theirs
Who teaches ________ English this term?
A．
B．
C．
D．