The students should ________ to choose their own clothes. It will be a good way _____ themselves happy.A.allow, to keepB.allowed, keepingC.be allow, keepingD.be allowed, to keep
网友回答
D解析情态动词should的被动语态应该为should be +动词的过去分词，即should be allowed to do sth，a good way to do sth,动词不定式作后置定语，故选