The child enjoyed _____ up the wooden bricks then knocking them down.A．addingB．p
题型：不详难度：来源：
The child enjoyed _____ up the wooden bricks then knocking them down.| A．adding | B．pushing | C．piling | D．forming |
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答案
| C |
解析
| 考查动名词和动词短语的构成辨析。 pile up (="lay" in a pile or as if in a pile) 把......放成一堆, 堆积：。Pile up作不及物动词用, 意为“积压; (若干汽车) 相撞” |
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