Mr. Harris apologized for the children ______ the lady _____ what they had done.

In time we reached a stagewe had more young readers than old ones

They lost their way in the forest, and _____. Which of the following is wrong? [ ]

(2012·南京高二检测) Some people are worrying about the possibility _______ mobile phones could be responsible for a range of illnesses, from rashes (皮疹) to brain tumors

__________, Tony. — Sorry, Ms Wang.