3.---No smoking in our factory,sirit might cause fire.
---Oh,I ____ that.Sorry,I won't do it again.( 。
A.don't knowB.didn't knowC.won't knowD.haven't known

分析 --先生,在我們工廠不能吸煙,會引起火災(zāi)的.
--哦,我之前不知道,對不起,我咱也不會那樣做.

解答 答案:B,考查謂語動詞,根據(jù)語境表示之前不知道在工廠不能吸煙,因此謂語動詞要使用一般過去時,A選項是一般現(xiàn)在時,C選項是一般將來時,D選項是現(xiàn)在完成時,均不符合題意.

點評 考查謂語動詞,應(yīng)分析句子應(yīng)使用的時態(tài).

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