【简答题】Cars must stop at red traffic lights; _____________, bicycles should stop too, but they don’t always do so. 3. There are two main theories _________ why acupuncture (针灸) is so successful. 4. Sailors u...
【多选题】A: 1. ? B: Not yet. Exercise 3 is too difficult for me. A: Don’t worry. 2 _ ___. B: It’s very kind of you. But I think I can do it myself. Can you lend me your English- Chinese dictionary? A: With ple...