Complete the sentence with had to/ didn't have to or could/ couldn't. a) sorry i'm late. i take the dog for a walk before i left. b) i looked for my keys for ages, but i just find them! c) i be home early last night. d) we go to school yesterday, so we played football at the park. e) when helen was eight, she swim really well. f) i answer the question, so i asked my teacher to help me. g) we missed the last bus, so we walk home. h) sue see the board, so she moved to another desk.