16.13when and where to hold the meeting__yet.a.is not decidedb.are not decidedc.has not decidedd.have not decided

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16.13whenandwheretoholdthemeeting__yet.a.isnotdecidedb.arenotdecidedc.hasnotdecidedd.havenotdecided1

16.13when and where to hold the meeting__yet.a.is not decidedb.are not decidedc.has not decidedd.have not decided
16.13
when and where to hold the meeting__yet.
a.is not decided
b.are not decided
c.has not decided
d.have not decided

16.13when and where to hold the meeting__yet.a.is not decidedb.are not decidedc.has not decidedd.have not decided
是不是选C呢?
yet证明用完成时