Keep an optimistic and positive attitude — Don't put yourself to any _____
| A．mood | B．impression | C．effect | D．bother |
| A．a; a | B．a; the | C．the; a | D．the; the |
| A．surrounding; in which | B．surrounded; in which |
| C．surrounded; where | D．surrounding; where |
I was really anxious about you. You _______ have left home without a word.
| A．mustn't | B．shouldn't | C．needn't | D．couldn't |
___ reading books in my spare time, I also surf on the internet sometimes.
| A．Including | B．Except | C．But | D．Besides |
Work means much to me. It is ______ of my life ______ air, water and sunlight.
| A．as much a part; as | B．as a part as much; as |
| C．as a part much; as | D．so much a part; as |