It ____how long the shock that explosions hit London transport system will stay in people’s hearts.

I can’t understandit is that makes him so difficult at school.

I can’t find Mr. Smith .Where did you meet him this morning ?—It was in the hotel ______he stayed .

the way, students _______ school uniforms stopped to look at us when we were cycling on campus.

Will teachers _____ by computers in the future, Tony–Maybe yes, maybe no. But I’m sure we’ll learn from both of them.