1．____ from endless homework on weekends, the students now find their own activities, such as taking a ride together to watch the sunrise．
A．Freed B．Freeing C．To free D．having freed
2．——So you missed the meeting．
——____． I got there five minutes before it finished．
A．Not at all B．Not exactly C．Not especially D．Not really
3．——Do you mind if I smoke?
——____
A．Why not? B．Yes, help yourself C．Go ahead D．Yes, but you’d better not
4．——We must thank you for taking the trouble to cook us a meal．
——____．
A．With pleasure B．It doesn’t matter
C．It was no trouble at all D．By all means