—I'llborrowthisbookfromBetty．—________takeitwithoutherpermission．A.

— I'll borrow this book from Betty．— ________ take it without her permission．A.Better notB.It's better you should notC.You'd better not toD.Better you don't

A解析这句句子的意思是“——我将从贝蒂那里借一本书。——没有她的允许，你最好不要这么做。”回答的后半句完整回答应该是：You'd better not do it．所以B项和D项均不对，而had better后面我们用动词原形，故C项也不正确。而A项的Better not就是You had better not do it的省略结构，所以我们选A项。

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