下列哪一组省区是我国商品生猪的主要产区？[ ]
A、四川、湖南、河北
B、湖南、河南、安徽
C、四川、湖南、河南
D、江西、海南、贵州
答案：C
连词成句。
1. the, boy, doing, is, what (?)
____________________________________________________
2. like, soup, some, would, you (?)
3. having, you, are, fun (.)
4. Danny, I, find, can't (.)
5. Jenny, go, to, wants, shopping (.)
____ for a bus, I was reading a magazine.
A．While was waiting
B．While I waiting
C．While I am waiting
D．While waiting
