Fill________theblankswith“a”,“an”or“

发布时间:2020-07-27 06:24:12

Fill ________ the blanks with“a”,“an”or“the”where ________.A.in; is necessaryB.with; necessaryC.in; it necessaryD.in; it is necessary

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D解析fill in the blank填空;where necessary=where it is necessary有必要的地方.
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