1. work ( used to + V(nguyên thể) )
2. knows/could
3. worked ( câu ''wish'': ước --> lùi thì )
4. came ( quá khứ tiếp diễn )
5. have ( used to + V(nguyên thể) )
6. meeting / working ( While + S + present continuous )
7. reading/cooking
8. lived ( câu ''wish'': ước --> lùi thì )
9. went/was ( thì quá khứ đơn do có từ '' last time '')
10. eat ( used to + V(nguyên thể) )
