| A | B |
| I asked after him | ask for news about someone |
| I backed down | stop asking for something |
| I backed out | decide not do something you agreed to do |
| I banked on it | depend on something happening |
| It broke down | when a machine or vehicle stops working |
| It broke out | a disease or war starts |
| I brought it forward | change an event’s date or time so it is earlier |
| They brought it in | introduce a new law or system |
| Microsoft brought it out | produce and start selling a new product |
| I brought him up | look after a child until they are an adult |
| I brought it up | start discussing a subject |
| I bumped into him | meet by chance |
| I called it off | cancel |
| I carried on doing it | continue doing something |
| The idea caught on | become popular or fashionable |
| I finally caught on | understand |
| I chased after him | follow someone quickly in order to catch them |