4.1. 1. Facing a lot of people always makes me nervous. 2. As for knowing about it, she knows more than I do. 3. Susan isn't as good at English as Tim. 4. The children ought not to stay up late. 5. This is the first time I have seen her at this club. 4.2. 1. Most people in Tokyo travel to work by train. 2. I have been to Sa Pa many times with my family. 3. I did not go to school yesterday because I was ill. 4. Nha Trang attracts lots of tourists because it has the most beautiful beaches in Vietnam. 5. In his free time, my father often plays badminton with his friends.