1. Complete the sentences with the negative form of the verb "to be."
a. Bella ____ my sister. b. She ____ my mother. c. I ____ your brother. d. Kevin ____ her teacher. e. Bill ____ rich. f. We ____ cousins. g. He ____ your father. h. The flower ____ red. i. They ____ in my house. j. It ____ sunny today. k. You ____ Peruvian. l. I ____ very tall.
