1.perhaps I didn't do(加 it) too badly .
2.this is the book that I bought(去掉 it) yesterday .
3.(what 改为 How) about go out for a walk
4.this case doesn't belong to (his改为 him) .
5.you'd better(去掉 to) go to school now
1.perhaps I didn't do(加 it) too badly .
2.this is the book that I bought(去掉 it) yesterday .
3.(what 改为 How) about go out for a walk
4.this case doesn't belong to (his改为 him) .
5.you'd better(去掉 to) go to school now