He made an effort to practise ______ every afternoon ______ winning a prize in the singing

He made an effort to practise ______ every afternoon ______ winning a prize in the singing competition.
A．to sing,in order to B．sing,so that
C．singing,in the hope of D.sing,in hope of
选C
practise doing sth练习做某事
in the hope of doing sth 固定词组.意思是：“希望做某事”