a. Some people are sitting at the tables
b. Some people are carrying meals across a room
c. Some people are placing chairs at the bar
d. Some people are waving at each other
입니다.
a가 답인데, 사람들 전부 의자에 앉아있거나 서있는데 왜 a가 답으로 나와있나요?테이블에걸터앉을수도있는거아닌가요
명백하게보면 a도 오답인데요
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