2. It was ridiculous        for so long a time. Didn't you think of some potential danger?  (leave)

把這個嬰兒單獨留下那么長時間實在是太荒唐了，難道你就沒想到可能會有危險嗎？

2. to leave the baby alone考查不定式的用法。Itis a々.to do sth.表"做某事是……的"。把某人獨自 留下，用leave alone來表達。此題的句型結(jié)構(gòu)為： it is / was adj. for / of sb. to do sth.

題目來源：高考丟分題英語 > Unit 2 Robots

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