按要求完成下列各题。(12分)
（1）I come from America．(就画线部分提问)
________ ________ you ________ ________？
（2）often，on，go，we，trips，field(连词成句)
________________________________________________________________________．
（3）We have many projects to do.(改为否定句)
We ________ ________ any projects to do.