句型转换（5%）

小题1:These are my grandparents. (变一般疑问句)

_______ these ______ grandparents?

小题2:Is this his picture? (作肯定回答)

_______, ______ is.

小题3:The tape player is in the room. (对划线部分提问)

_______ ________ the tape player?

小题4:She is a nice girl. (单数变复数)

_______ are nice ______.

小题5:They are erasers. (复数变单数)

______ is _____ eraser.

钢的热变形过程一般是在（）区进行。