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 装配线
semblance 外表
resemble 相似,相像
take after 与某人长得像
</assemble>
<pile>
pile 堆积
compile=put together 编辑,汇编
</pile>
<accumulate>
accumulate 积累
cumulus 积雨云
cumulative 积累的,渐增的
</accumulate>
vt. 聚集,集合,装配
vi. 集合,聚集