Помогите с 2, 3, 4, 5, 6 номерами.нужно открыть скобки, а потом составить отрицание и вопрос

2. She taught us last year She didn't teach us last yearDid she teach us last year ?3. The weather was sunny yesterdayThe weather wasn't sunny yesterdaywas the weather sunny yesterday ?4. He could play tennis last year He couldn't play tennis last yearCould he play tennis last year ?5. They bought the present yesterdayThey didn't buy the present yesterdayDid they buy the present yesterday ?6. Pam gave me this book four days agoPam didn't give me this book four days agoDid Pam give me this book four days ago ?