( )that they had made an important discovery in science Little they realized

( )that they had made an important discovery in science Little they realized
They had realized littleLittle did they realize Little had they realized
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英语人气:755 ℃时间:2019-12-02 07:07:50
优质解答
Little did they realize
副词在句首要倒装(little)
had made an important discovery 是过去完成时,前面要用一般过去时(did)
所以就是第二个啦~
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