作业帮Two ___ ,a pencil and an eraser are in the pencil box.(填空)
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Two ___ ,a pencil and an eraser are in the pencil box.(填空)
Two ___ ,a pencil and an eraser are in the pencil box.(填空)
Two ___ ,a pencil and an eraser are in the pencil box.(填空)
pens,（钢笔）
ballpens,（圆珠笔)
...后面记得加s就行了.