Once at a table, left-handers need to move the water glasses put on the right side to the

发布时间：2020-08-17 03:45:39

Once      at a table, left-handers need to move the water glasses put on the right side to their more convenient left side.
A. seating
B. having seated
C. seated
D. seat

网友回答

A. seating
B. having seated
(答案→)C. seated
D. seat
解析：考查状语从句的省略，当主从句主语一致的时候，可以省略从句的主语和be动词，once seated=once left-handers are seated，句意：当左撇子坐在桌子旁边的时候，他们需要把放在右边的水杯放在他们方便的左手这边，选C。
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