Because the staff dressed up us clowns and they (have) organized games.
问题描述：
Because the staff dressed up us clowns and they (have) organized games.
括号中的词的形式貌似错了,我改成正确的.谢.
答
前面clowns前面的us应为as,dressed up as clowns,穿作小丑.
括号里的have应为had,因为and前面是一般过去时.