同义句转换 I need your help badly!He studied harder so that he could catch up with others. He studied harder ____ ____ _____ catch up with others.(每空一词)

问题描述:

同义句转换 I need your help badly!
He studied harder so that he could catch up with others. He studied harder ____ ____ _____ catch up with others.(每空一词)

in order to 为了