单选题：Everybody _______ in the hall where they were welcomed by th

题目内容：

Everybody _______ in the hall where they were welcomed by the secretary. A．assembled
B．accumulated
C．piled
D．joined

参考答案：

答案解析：

The growth of part-time and flexible working patterns, and o

The growth of part-time and flexible working patterns, and of training and retra

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