高三一道英语题,急Where and how they found the boats with treasures ____ made knowm up to now.A.hasn't been B.haven't been C.wasn't D.weren't为什么选A?

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高三一道英语题,急Where and how they found the boats with treasures ____ made knowm up to now.A.hasn't been B.haven't been C.wasn't D.weren't为什么选A?

高三一道英语题,急Where and how they found the boats with treasures ____ made knowm up to now.A.hasn't been B.haven't been C.wasn't D.weren't为什么选A?
高三一道英语题,急
Where and how they found the boats with treasures ____ made knowm up to now.
A.hasn't been B.haven't been C.wasn't D.weren't
为什么选A?

高三一道英语题,急Where and how they found the boats with treasures ____ made knowm up to now.A.hasn't been B.haven't been C.wasn't D.weren't为什么选A?
up to now得出用现在完成时,”where and how they found the…treasures”整体作主语为三单,这整件事是被得知,所以还要用被动,综合起来为A

  1. 用短语up to now暗示要用现在完成时

  2. “Where and how they found the boats with treasures”该短语作为一个整体，看做单数

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