【題目】When and where to go for the on-salary holiday ___________ yet.
A.are not decided
B.have not been decided
C.is not being decided
D.has not been decided

【答案】B
【解析】yet用于現(xiàn)在完成時(shí)。根據(jù)句意還沒(méi)有被決定，故選B。

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