(There are) twelve people (take part) in the experiment, four (working) (as) a g

游客2025-03-17 15

问题 (There are) twelve people (take part) in the experiment, four (working) (as) a group.

选项 A、There are
B、take part
C、working
D、as

答案 B

解析应改为taking，分词短语作定语。本句的意思是：“有12个人参加了试验，4个人一组。”

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