句型转换（每空一词）。
1. Martin has a sore back.(改为一般疑问句)
________Martin ________ a sore back?
2. There's something wrong with his ear.(对画线部分提问)
________the matter ________ his ear?
3. You should eat some Chinese food.(改为否定句)
You ________ eat ________Chinese food.
4. We should practice speaking English every day.(对画线部分提问)
________ ________you ________ ________every day?
5. Playing soccer with friends is very exciting．(改为同义句)
________is very exciting ________ play soccer with friends.
