问题
选择题
______ at the party, we saw Ruth standing alone in the corner of the hall. [ ]
A. Arriving
B. To arrive
C. Arrive
D. Arrived
答案
答案：A
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______ at the party, we saw Ruth standing alone in the corner of the hall. [ ]
A. Arriving
B. To arrive
C. Arrive
D. Arrived
答案：A