句型转换
____ She often does her homework at night. (变为否定句)
She her homework at night.
____ We are cleaning our classroom now. (对划线部分提问)
you now?
____ He likes pandas because they are very cute. (对划线部分提问)
he pandas?
____ I think he is in the classroom.（改为否定句）
I think he in the classroom.
____ Mr Black is a doctor.（对划线部分提问）
Mr Black ?
，则z为
