Chon cau viet lai dung: 1. I'm always nervous when I travel by air A. I always feel nervous, so I never travel by air B. Traveling by air always makes me nervous C. Being nervous makes me travel by air D. Travel by air always makes me nervous 2. I've never eaten this kind of food before A. I've never eaten such a good food before B. The food is so good that I've never eaten before C. It's the most tasty food I've ever eaten D. It's the first time I've eaten this kind of food 3. A friend in need is a friend indeed A. Only in dangerous situations should we need a friend B. A friend who helps us in difficult situations is a true friend C. Indeed, we need a true friend in every situation D. A friend in need is not a good friend 4. We don't have her number so we can't contact her now A. If we have her number, we will contact her now B. Had we her number, we could contact her now C. Should we have her number, we could contact her now D. If we had her number, we could contact her now