根据句子要求变换句型,急用

1,If you need help,let me know.
改为反义疑问句:
If you need help,let me know,will you?(对祈使句的反问用“will you?”)
2,I saw it,Mary was reading the boss at that moment
改为简单句 ：
Mary was reading at that moment.
I saw the boss at that moment.
3,The bridge is fifty metres long
就画线部分提问：
How long is the bridge?
4,Could you tell me when we will go to Hong Kong?
改为简单句:
Could you tell me when?
When will we go to Hong Kong?
5,This coat is too big for you
This coat is too small for you
合并为一个简单句:
This coat is not only too big,but also too small for you .
(用not only...,but also ...不但.而且.)