He bought a house for his children ________
A、livedinB
本题属于动词不定式复合结构做后置定语。in不可省略。句意：他买了一套房子给孩子们住。
Thetrafficwasheldupformorethanthirtyminutes,________causedmetoarrivelate.
TheFrenchmaintaina________separationofpersonalandprofessionallife.
He declined _______ more about it.
The French maintain a ________ separation of personal and professional life.
Importswillbeallowedinproportion_______exports.
