1. Why don't you pretend to be Jenny's friend? (同义句)
    Why                         to be Jenny's friend?
2. My teacher told us to sing in that classroom. (否定句)
    My teacher told us             to sing in that classroom.
3. Grandma takes good care of my little sister everyday. (同义句)
    Grandma                         well my little sister every day.
4. All of us think that maybe Mike will be a singer in the future. (同义句)
    All of us think that Mike                          a singer in the future.
5. Lisa doesn't have to go to the museum with us, because she hurt her leg. (同义句)
    Lisa              go to the museum with us, because she hurt her leg.