t because of his laziness_______ he didn’t dothe experiment successfully- No, it was because of his carelessness

The traffic rule says young children under the age of four and _____ less than 40 pounds must be in a child safety seat.[ ]

The policeman asked the child ____ so thathe could take him home.

The central heating system of this office building isdown and several workers ______ it right now.

Nancy, have you gone over your lessons after school? — Not yet — Please remember: __________