A．sinceB．betweenC．fromD．lately……

单项选择题A．trailB．maskC．filmD．veil

单项选择题What is Higonnet’s attitude towards the fact that the two sides of the myth complemented each other

单项选择题Which of the following has been proved to transmit HIV

填空题Some people send cards to themselves on February 14 to ______.

填空题The best thing you can do about flu is to stay ______.