摘要: ---Why are they taking all the equipment away?---The job , they are packing up to leave.A. done B. being done C. was done D. having done[解析]A:本句最重要的标志符号为第二句两段之间的逗号:前后如为主句和从句之间关系.必有连词.既然没有连词.且后一句为完整句.前半部分势必为独立主格结构.排除C项,B.C分别因时态和语态不正确被排除.三.交际口语类

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