Choose the most suitable sentence or question.
a)1. I wash my hair.2. I'm washing my hair.b)1. Do you know the answer?2. Are you knowing the answer?c) 1. Do you wait for the school bus? You're in the wrong place!2. Are you waiting for the school bus? You're in the wrong place!d)1. That bike costs £350.2. That bike is costing £350.e)1. Do you understand?2. Are you understanding?f)1. I dodo my homework2. I'm doing my homework.brackets. Use present simple or