1)Shall l have a word with Tom (保持原句）
Shall l talk withTOM?
2)l don't kown what l shall do .(简单句）
l don't kown what to do.
3)l looked after my brother carefully.(保持原句意思）
l took care of my brother carefully.
4)What difficult problem it is !(用how改写）
How difficult the problem is!
5)They heard Jim sing the french song in the next room (改被动语态）
Jim was heard by them sing the french song in the next room.
6)we widely use computers now(改被动语态）
computers are widely used by us now