They are just college graduates and don’t realize _____ to start and run a company.
| A．what takes it | B．what they take | C．what takes him | D．what it takes |
——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 |
——Do you mind if I smoke?
——____
| A．Why not? | B．Yes, help yourself | C．Go ahead | D．Yes, but you’d better not |
——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 |
____ 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 |
Young as he is, David has gained ____ rich experience in ____ society.
| A．the; the | B．a; 不填 | C．不填；不填 | D．不填；the |