1. Though he tried hard, he didn't succeed
=> However
2. No matter how hard i tried, i couldn't open the door
=> Try as
3. We stayed in that hotel despite the noise
=> Although
4. I last saw my uncle when i was a school boy
=> i haven't
5. His failure bitterly disappointed his parents
=> his parents
6. why did no one inform me of the change?
=> why
Loga
Sinh Học lớp 12
