题目内容

______ needs further discussion to decide whether we will _______ the war operation.


  1. A.
    It; join in
  2. B.
    This; take part in
  3. C.
    That; join in
  4. D.
    There; attend
A
“whether we will join in the war operation” 是主语从句,放在句末时,要用it作形式主语。
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