句型转换。
1. My sister needs a banana. (改为同义句)
My sister ______ a banana.
My sister ______ ______ a banana.
2. 她想买一支笔。
She ______a pen.
She ______ ______ ______buy a pen.
3.I need a lot of sleep. (就画线部分提问)
______ ______ ______ ______?
4.Cheng never watches TV.(就画线部分提问)
______ ______ does Cheng watch TV?
5.He goes to Dalian three times a year.(就画线部分提问)
______ ______ ______ does he______ to Dalian a year?