句型转换（每空1分，共15分）
I find it difficult to learn English.(改为复合句)
I find _________ __________ _________ difficult to learn English.
I don’t know what I can do for the people in that area.(改为同义句)
I don’t know __________ __________ __________ for the people in that area.
This might be Bill’s basketball.(对划线部分提问)
_________ basketball __________ this ___________ ?
You should allow him to choose his own clothes.(改为被动语态)
He _________ _________ _________ to choose his own clothes.
The desk is made of wood.(对划线部分提问)
_________ _________ the desk _________ of ?