Hello good teachers. Sorry to disturb you. 1a. He patted the girls on the head. 1b. He patted the girls on the heads. 1c. He patted the girls on their heads. 1d. He patted a head to the girls. Question: Which is/are grammatically correct? 2a. He stepped on my toe. 2b He stepped my toe. 2c. He stepped me on my toe. 2d. He stepped me on the toe. Question: Which is/are grammatically correct?