Dạng V_ing, to V 1. The children stoped (talk)................ when the teacher came 2. Don't forget (turn)............. off the light when you go out 3. Can't you help (do)................ the washing up? I hate (do)................washing up 4. I hope (finish)...................my hometown in a few minute 5. It's a difficult with problem. I have to spen 2 hours (slove) ...........................it