完成句子(10分)
She is helping clean the street. (对划线部分提问)
__________ __________ she __________?
Tina is reading some books.  (改为否定句)
Tina __________ reading __________ books. 
The girls are watching a movie at the mall.  (对划线部分提问)
__________ __________ the girls __________ a movie?
我妈妈正在商场购物。
My mother __________ __________ at the mall.
他们正在谈论电影《2012》。
They’re __________ __________ the movie 2012.