1. A enough strong `->` strong enough ( S + be + adj + enough + to V )
2. A buying `->`to buy ( would like + to V )
3. D themself `->` themselves
4. B to play `->` play ( let + SO + Vinf )
5. B putting `->` put ( Let's + Vinf: Hãy )
6. B do `->` to do ( It + takes + SO + thời gian + to V )
7. among `->` between ( between ...... and ........ )
8. A recently visited `->` have recently visited ( recently: hiện tại hoàn thành )
9. B are going to study `->` is going to study ( chủ ngữ số ít )
10. A see `->` saw ( last summer: quá khứ đơn )
IV
1. awarded ( last year: quá khứ đơn )
2. to play - was ( used to + Vinf )
3. started to - write ( start + to V/Ving )
4. Did - go
5. Did - use to
6. phoned ( yesterday: quá khứ đơn )
7. to live - were - grew ( used to + Vinf )
8. moved - are living ( at present: hiện tại tiếp diễn )
