This course is______ must for students who want to work in the film industry as______editor.

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问题 This course is______ must for students who want to work in the film industry as______editor.

选项 A、不填; a
B、a; an
C、不填; the
D、a; the

答案B

解析 一般说来,在辅音或半元音开头的词前用a,而在元音开头的词前用an。因此must前面用a,而editor前面应该用an;故答案选B。注意:有些以元音字母开头的单词,由于第一个音不是元音而是辅音.其前仍用a而不用an。
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