Writing Part
I.[] run, cup, lunch, bus, number
[ju:] music, student, duty, use, excuse
II. 1. C 2. B 3. A 4. C 5. A
III. 1.I'm singing.
2. I'm jumping.
3. I'm jumping.
4. I'm flying a kite.
5. I'm putting on my coat. (答案只供参考)