Since this road is wet and slippery this morning, it __________ lastnight.A. must rainB. was rainingC. must have rainedD. may rain
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完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块