When the children watched a horror film __________ their parents present, their faces showed only the slightest hints of reactions.
(A)of
(B)with
(C)as
(D)from

改編自100英文指考：

When the children watched a horror film __________ their parents present, their faces showed only the slightest hints of reactions. (A)of (B)with (C)as (D)from

排除選項as

→ When the Japanese students watched the film as the teacher present,

有些同學可能誤以為這樣可以把as解釋成準關代，但是as當準關代必須前面出現「the same/such/as」時才會用上，但這裡沒有。而且如果是關係子句，則充當動詞的present這裡應當「配合前後時態」使用「過去式」presented才對。

故不考慮。更不可能以為as是當「when」來解釋，一來這樣present的受詞不見（時態也還是不對），而且本句前方已經出現了一次when，這邊不可能出現第二個when

選項with

→ When the Japanese students watched the film with the teacher present,

這個句子意思是學生看影片時「有老師在現場一起看」。這就能呼應下一句的「但當他們獨自看影片時」了。同學不要忘記with+受詞，其後方的受詞補語也可以是形容詞，然後

剛好present就可以當作形容詞使用。