1.the children came to the office to ask a maths question.(对

1.the children came to the office to ask a maths question.(对划线部分提问）
____________ ____________ the children ___________ to the office to__________?
2.is pat in (改为同义句）
Is pat _______ _____________?
3.he goes to work by bike.(改为一般疑问句）
_______ __________ he _________ to work by bike
4.Is there a camera in the bag (改为复数句）
_____________ there ___________ in the bike?