Cirele the correct answer. 1. I (have/ has/ am) a cold today. 2. She (is/ have/ has) very expensive clothes. 3. Mark (has/ is/ have) a good job. 4. (I'm/ I have/ I) sorry. She isn't home now. 5. The food (isn't/ aren't/ hasn't) very good. 6. Potatoes (are/ have/ has) very few calories in them. 7. Mathematics (is/ are/has) very difficult for some people.