题目内容：

句型练习。（10分）

1. The shirt cost me only 50 yuan.    （就划线部分提问）

                                        did the shirt cost?

2. That dictionary cost me $10 . (同义句)

I                    10                    for that dictionary. 

3. My parents should allow me to study with friends.（改为被动句）

I should                                      to study with friends.

4. I used to be a naughty boy. (改成一般疑问句)

                you                              be a naughty boy?

5. The little boy cried because he was hungry.（就画线部分提问）

                                       the little boy cry?