Mary didn’t know __________, so he had to wonder along the street．
A.where to stayB.which room to stayC.to stayD.where stayed在线课程A
“玛丽不知道在哪里过夜，没有别的好办法，只能在街上溜达。”此题考查疑问词加不定式的用法，B项中stay缺少in，故排除。