Read the following passage and choose the item (a, b, c or d) that best answers each of the questions about it.
Yesterday, Ba had to go to the doctor because of an awful stomachache. The doctor asked Ba some questions. He told her that he had fish, rice and soup for dinner. He also ate some spinach, but his parents didn’t. The doctor said that the spinach could make him sick. Vegetables often have dirt from the farm on them. The dirt can make people sick. She said that he should wash vegetable carefully. And she gave Ba some medicine to make him feel better.
Ba ate some fish and # # his parents.
so does so did neither did either