This book is better than the last one we used. => The book we used last time was ______________.
This book is better than the last one we used.
=> The book we used last time was ______________.
This book is better than the last one we used.
=> The book we used last time was ______________.
Đáp án: The book we used last time was worse than this book.
Giải thích: so sánh hơn với tính từ bất quy tắc: dạng so sánh hơn của bad là “worse”
Dịch: Cuốn sách chúng tôi sử dụng lần trước còn tệ hơn cuốn sách này.