The helping verb is <u>have</u>, as it shows a continuos tense.
"It was hard being the captain of the Constellation"
Answer:1) He makes the dinner. 2) Charlie writes the letter. 3) The teacher reads my story. 4) We send the wedding invitations. 5) Sally cleanes the car.
Biology does influence gender development. For example, some differences between typical boys and girls can be explained by the effect of genes on sex chromosomes, and by the levels of sex hormones and their effect on the brain during early development (e.g., prenatal exposure to high levels of male-typical hormones).
