He is __________boy that we all like him.
The baby is only four months old and she needs someone to _____ her food for her.
Dad advised us to practice _____ our tent in the yard several times before we went camping.
Mom, you’ve bought the wrong shirt. It’s not the red one _____ the blue one.
--- Joe, would you like to play _____ volleyball with us this afternoon?--- Sorry, I need to practice playing ______ piano.
People have learned a lot from _______ / saɪən'tɪfɪk / studies.