12. Students_____to go on the school trip should ask their parents first.
(A) who want
(B) want
(C) who they want
(D) what they want
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統計: A(389), B(106), C(84), D(27), E(0) #3239647
統計: A(389), B(106), C(84), D(27), E(0) #3239647