after effects手机中文:英语问题 请告诉我原因 55.3

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do you know that our monitor,along with some other classmates,____our maths teacher in hospital already
a.have visited
b.will visit
c.has visited
d.had visited

C对,
句子的主语是our monitor.
along with some other classmates是伴随状语.根据主谓一致的原则和句子中的时间状语already可以确定答案是C.

has visited
主语是our monitor

c