问题

is know to us all is that the oldworker, for _____ life was hard in the past, still works hard in hisseventies

A:Not realized
B:Not torealize
C:Not realizing
D:Not to haverealized

正确答案是：

同类题型

She was walking down the road _______ she heard someone shouting for help

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Would you like to help us?— , no

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