https://online2.tingclass.net/lesson/shi0529/0001/1240/07-3.mp3
https://image.tingclass.net/statics/js/2012
23. Everybody _____ in the hall where they welcomed by the secretary.
A. assembled B. piled C. joined D. accumulated
<assemble>
assemble (人群)聚集
assembly line 裝配線
semblance 外表
resemble 相似，相像
take after 與某人長得像
</assemble>
<pile>
pile 堆積
compile=put together 編輯，匯編
</pile>
<accumulate>
accumulate 積累
cumulus 積雨云
cumulative 積累的，漸增的
</accumulate>
