Marie Bonaparte put up the ransom that the Nazis insisted on if Freud was to be allowed to leave Vienna.
(B) if Freud were allowed
(C) should Freud be allowed
(D) if they will allow Freud
(E) should allowance be made for Freud
Ans:A
我知道
(D)時態未來式錯誤
(E)用allowance錯誤,不可選
可以麻煩幫忙解釋一下(A)(B)(C)三個選項嗎?為何不能使用假設法呢?