改错.（每小题只有一处错,圈出并改正.）

题目

改错.（每小题只有一处错,圈出并改正.）
1.the blue one is much expensive than red one.
2.how about go out for a walk?
3.i don't want to buy too expensive watch,too.
4..when kevin was at home he doesn't cook without a parent

答案

1 much改为more
2 go改为going
3 buy和too之间加a
4 was改为is