题目内容：

Dear Shirley,

Most people get colds by touching things that another person with a cold once touched. You can ______ catch a cold by shaking hands. ______ if someone you know has a cold, you should try not to use the same cups, dishes or telephone.

Many doctors ______ that vitamin C can help stop colds. They ______ people to take some vitamin C when they start to get cold symptoms (症状). You can also have a try. But if it doesn’t work, you should go to the _____.

1.A. never B. only C. already D. even

2.A. So B. Or C. But D. Until

3.A. mind B. forget C. believe D. refuse

4.A. promise B. advise C. wait D. send

5.A. hospital B. museum C. cinema D. restaurant