we will play cumputer games tomorrow.把这句话改成否定句

英语的 快来!
A:What's wrong with my cumputer?Dad?Can you help me?
B:Let me have a look!It's OK now.
A:You're great,Dad!
B:It's a piece of cake.
What does It's a piece of cake.mean?(You can answer in Chinese)

英语翻译
Sarth likes using cumputer,and she can type very quickly.She wants to work in an office.
Tip:If you can type quickly,you can be a secretary.
的翻译