Упражнение 1. Раскройте скобки и поставьте предложение в утвердительную, вопросительную и отрицательную формы.

1. He has been a dancer for fifteen years. Has he been a dancer for fifteen years? He hasn’t been a dancer for fifteen years. 2. Mary and Jack watched "Titanic" last night. Did Mary and Jack watch "Titanic" last night? Mary and Jack didn’t watch "Titanic" last night. 3. I have known him since 1999. Have I known him since 1999? I haven’t known him since 1999. 4. I finished reading "Pride and Prejudice" yesterday. Did I finish reading "Pride and Prejudice" yesterday? I didn’t finish reading "Pride and Prejudice" yesterday.