I told Sally how to get here, but perhaps I _______it out for her. ( )

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问题 I told Sally how to get here, but perhaps I _______it out for her. (    )

选项 A、had to write
B、must have written
C、should have written
D、ought to write

答案C

解析 must have done用于肯定句,表示推测,意为“一定(已经)做了”。Should have done可用于肯定句、否定句或疑问句,表示责备或遗憾等,意为“本来应该做”。句意为:我告诉Sally如何到这儿,但是或许我本应该给Sally画出路线。答案为C。
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