Module 1. School life » Стр.13 (C)

C. Choose a, b or с. 1. My mum (b) used to drive me to school, but now I take the bus. 2. I bought my first smartphone three years (c) ago. 3. Did you (a) use to upload pictures to your website in the past? 4. I (a) called my cousin last week to invite him over.