_________ his partner ______ he has been to Paris，so they know Paris well．（ ）
A．Neither； norB．Not only； but also
C．Either； or
Be careful，________ you'll make fewer mistakes in the exam．（ ）
A．orB．butC．and
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