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whenandwheretogofortheon-slaryholiday___yeta:arenotdecidedb:havenotbeendecidedc:isnotbeingdecidedd:hasnotbeendecided
题目内容：
when and where to go for the on-slary holiday___yet
a:are not decided b:have not been decided c:is not being decided d:has not been decided优质解答
D.
两个疑问词作主语时,谓语动词用单数,而且是现在完成时.
a:are not decided b:have not been decided c:is not being decided d:has not been decided
优质解答
两个疑问词作主语时,谓语动词用单数,而且是现在完成时.
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