25. I couldn’t do my homework with all that noise __
| A．going on | B．goes on | C．went on | D．to go on |
| 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 |
To gain a bigger _______ internationally, many companies are striving to make their products more competitive.
| A．hold | B．share | C．interest | D．part |