The girl on the bus began to sing a pop song and soon all the others . A. joined
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The girl on the bus began to sing a pop song and soon all the others_________.
A. joined B. joined in C. attended D. took part in
试题答案
B
由句意得知，所有的人都加入到了唱歌的行列。“join in”此处为不及物动词，意为“参加”；其中“in”为副词。“take part in”意为“参加(大型活动)；其中“in”为介词。