一道英语题，急急急

She was late for school because it rained heavily.（改为同义句）

She was late for school ______ ______ ______ ______ ______.

because of the heavy rain

because和because of 经常互相转换，注意把握它们的区别：because后跟的是一句子，而because of 后跟的是一名词或短语。