Change the sentences into the affirmative (V), negative (X) or question (?) form. (Thay đổi các câu thành dạng khẳng định (V), phủ định (X) hoặc câu hỏi (?).) 1. Albert can speak five languages. (?) 2. I could read when I was three years old. (X) 3. Tim and Steve can't cook well. (V) 4. My dad couldn't swim very fast last year. (V) 5. We can understand Italian. (X) 6. Kim could read when she was five. (?)