单句改错。 (     )1. There weren't some really clever seals . A          B     C                D (     )2. He won the first prize . He is lucky . A             B             C    D (     )3. Did Tommy travel by a plane when he was a child? A        B             C                      D (     )4. My Chinese teacher said something in the end of the meeting. A                B                   C             D (     )5. They saw an octopus in the Visitor Center . A    B              C            D _______________ _______________ _______________ _______________ _______________