问题
选择题
Mr White ______ at 8:30 for the meeting, but he didn't show up.[ ]
A. should have arrived
B. should arrive
C. should be arriving
D. arrived
答案
答案：A
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Mr White ______ at 8:30 for the meeting, but he didn't show up.[ ]
A. should have arrived
B. should arrive
C. should be arriving
D. arrived
答案：A