He must have missed the train, otherwise he _________ then.
A.
should arrive here
B.
would have arrived here
C.
has arrived here
D.
arrived here
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举一反三
【简答题】A.It is easy because the people are friendly. B.It is difficult because the people are not friendly. C.It is difficult in spite of friendly people. D.It is easy even when the people are not friendly.