问题
选择题
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
答案
答案：B
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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
答案：B