30.Boys and girls,make sure you ______ your names on the test paper before handing them in.A.wrote B.write C.will write D.had written选B,

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30.Boys and girls,make sure you ______ your names on the test paper before handing them in.A.wrote B.write C.will write D.had written选B,
30.Boys and girls,make sure you ______ your names on the test paper before handing them in.
A.wrote B.write C.will write D.had written
选B,

30.Boys and girls,make sure you ______ your names on the test paper before handing them in.A.wrote B.write C.will write D.had written选B,
答案:B
这是“make sure + that从句”中从句时态的一种特殊规定.
该规定如下:make sure后面的that从句中,不能使用表示将来时态的助动词,而是一般使用一般现在时表示一般将来时.
所以答案B为正解.
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这句是祈使句,祈使句的谓语动词都为一般现在时。