改错：1\Because it is very cold ,so Icatch a cold 2\The boy looked the sky ,but he saw nothing改错；3\She is doing her homework every day4\Giraffes usually eat the leafs on the top of trees

改错：1\Because it is very cold ,so Icatch a cold 2\The boy looked the sky ,but he saw nothing
改错；
3\She is doing her homework every day
4\Giraffes usually eat the leafs on the top of trees

1.去掉so或者去掉because
2.looked后加at
3.is doing 换does
4.leaves吧?另外我觉得on应该成in

3.is doing——does因为每天要用一般现在时
1.去掉because或者so，两者不能同时出现
2.looked at looked是不及物动词
4.the trees