exercise 2.Circle the correct answer.
1. I (have/ has/am) a cold today.
2. She(is/ave/ has) very expensive clothes.
3. Mark (has/ is /have) a good jop.
4(I'm/I have/I) sorry.
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.