为什么要设置开始点和结束点？

–Tht would men ____ lot of time. －－Relly I don’t men ____ny time.wsting; wstingB．to ws–Tht would men ____ lot of time. --Relly I don’t men ____ny time.wsting; wsting B．to wste; to wste C．wsting; to wste D．to wste; wstingA．wasting; wastingB．to waste; to wasteC．wasting; to wasteD．to waste; wasting