1. were-was2. sended-sent3.on-of4. helping-helped5. those∧were-who / that(或去掉were)
6. northern-north7. 去掉by8. their-whose 9. had∧destroyed-been 10. Slow-Slowly
1. were-was2. sended-sent3.on-of4. helping-helped5. those∧were-who / that(或去掉were)
6. northern-north7. 去掉by8. their-whose 9. had∧destroyed-been 10. Slow-Slowly