I
1. the homework could be done by her son when he was 5
2.the machine won't be repaired by those workers
3. will a new school be built near here ?
4. How can their bike be fixed ?
5. Something should be done before it's too late
II +III
bạn tham khảo : https://diendan.hocmai.vn/threads/t...ca-cac-cau-hoi-ve-ngu-am.261165/#post-3076651