How often does the （摆渡车）run?
举一反三
- " ______ does the No. 3 bus run""Every ten minutes." A: How soon B: How fast C: How often D: How long
- __________ money does she need? A: How many B: How much C: How D: How often
- How ______ does this bus run? 这路公交车多久一班？
- How often does the General Election in Britain take place?
- How many parts does a formal English letter often consist?