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A. has begun had begun has been on had been on
A. had been on has begun has been on had begun
has begun had begun has been on had been on
Has...had Has...was HavE.had ArE.was
had begun has been on has begun had been on
there being there has there had there to be
has started had been on has been on had started
has begun had been on has been on had begun
had been on had started has started has been on
has started had starded has been on had been on
has；begun had；begun has；been on had；been on
has begun has been on had begun had been on
had begun has been on has begun had been on
has begun had begun had been on has been on
receives has received is receiving will receive
A. has began had begun has been on had been on
A. has been on had begun has begun had been on
A.had already been on has already been on had already begun has already begun
had begun has been on had been on has begun
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