Everyone plays an important part in society．As members，we should try our best to do______ to make the world better and better．（ ）
| A． |
what we should do |
| B． |
what should we do |
| C． |
how we should do |
Don't worry． We're old enough to look after ．（ ）
A．weB．usC．ourselves
﹣ Where is Linda？ I can't find her．
﹣ She her homework in the library．（ ）
A．doesB．is doingC．did
﹣ Congratulations! You won the game．
﹣ ．（ ）
A．It doesn't matterB．Thank you
C．That's a good idea
We wait until the traffic light turns green when we cross the road．（ ）
A．canB．mayC．must
I like sweet music． It wonderful．（ ）
A．soundsB．looksC．smells