=>
1. had commuted
-> commute : đi lại
2. had suffered
-> suffer from : chịu đựng
3. was
-> there was + N số ít
4. had mushroomed
-> mushroom : mọc nhanh, phát triển nhanh ~ lên như nấm
5. hadn't built
-> build : xây dựng
6. had cooperated
-> cooperate : hợp tác
7. had people done
-> QKHT before QKĐ
8. had tried
-> try : thử
9. had evacuated
-> evacuate : sơ tán
10. had always wanted
-> want to V : muốn làm gì