l listened to ( )carefully.l told him l would brush my teeth every night.
问题描述：
l listened to ( )carefully.l told him l would brush my teeth every night.
答
l listened to【him】carefully.l told him l would brush my teeth every night.
因为下句中有提到him 所以前后对应.
我仔细的听着（他的话）.我告诉他我会每晚刷牙