找出下列句子的错误,并改成正确的句子(快!很简单）
1.Her sister doing her homework now._______________________________
2.Tom have a happy family._________________________________________
3.Sometimes my parents and me go for an outing on sunday.__________
4.I usually have lunch in home.____________________________________
5.We sing and dance at the party last night._______________________请把答案写整句.