______ Kitty ______ Cathy is going with you because one of them must stay at home.

Riding on the swings and playing with the ducks in the pond _____ our children’s greatest pleasures when we took them to the park.

— Mike, what did our monitor say just now?—Every student as well as teachers who are to visit the museum _____ asked to be  at the school gate before 6:30 in the morning. 

 It is I ____ singing in the garden.

.John is the only one of the students in the class that never______ a mistake even when it is pointed to him.