He _______ his lesson,and has never done that illegal business again since then.A.was learning B.had learnt C.learns D.learned

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He_______hislesson,andhasneverdonethatillegalbusinessagainsincethen.A.waslearningB.hadlearntC.learns

He _______ his lesson,and has never done that illegal business again since then.A.was learning B.had learnt C.learns D.learned
He _______ his lesson,and has never done that illegal business again since then.
A.was learning B.had learnt C.learns D.learned

He _______ his lesson,and has never done that illegal business again since then.A.was learning B.had learnt C.learns D.learned
D,从后句可知.他吸取了教训,强调的是吸取这个动作,故用一般过去时.

A. was learning 根据句意来选: 当时他正在上课,并且从此后他再也没做过违法的事.

不能选第二个,因为用过去完成时的话,必须要有过去时态啊,这里没用过去时
得到教训在过去,所以用过去时态,选D