I. 1. three twenty 2. half past five 3. nine o'clock 4. eleven six
5. a quarter to five
II. 1. How old are you?
2. How many chairs in the hall?
3. What's ten and twelve?
4. How much are the shoes?
5. How much is the postcard?
III. 1. six feet, eighteen feet 2. twelve months 3. sixty minutes
4. 答案略
IV. 答案略
V. 答案略