ften do you go to the concert —- ______________,but at least once a month.

Nowadays school bus safety has drawn much attention nationwide for children’s safety is _______ worries parents most.

. “I hear Johnson was badly injured in theaccident.” “_______ let‘s go and see him.”

Are Mr. and Mrs. White living alone in the house— Yes. They have three sons, but ______ of them live with their parents.

– Who helped you fix your bike —_______! I fixed it all by myself.