| A | B |
|---|
| by accident | (PHRASE) when something happens completely by chance |
| explain | (V) when you give details about something or describe it so that it can be understood |
| figure out | (V) succeed in solving or understanding a solution to a problem or the reason for something |
| good luck | (N) success or good things that happen to you, that do not come from your own abilities or efforts |
| investigate | (V) try to find out what happened or what is the truth in an event, situation, or claim |
| lucky | (ADJ) when someone has something that is very desirable or when they are in a very desirable situation |
| make sense | (V) succeed in understanding something |
| mystery | (N) something that is not understood or known about |
| on purpose | (PHRASE) when you do something intentionally |
| proof | (N) a fact, argument, or piece of evidence showing that something is true or exists |
| prove | (V) show by means of argument or evidence that something is definitely true |
| reunite | (V) when people meet each other again after they have been separated for some time |
| separate | (ADJ) when the two things are apart and are not connected |
| solve | (V) find a solution or an answer to a problem or a question |
| take a chance | (PHRASE) when you try to do something although there is a large risk of danger or failure |
| theory | (N) a formal idea or set of ideas intended to explain something and which is capable of being tested |
| unfortunately | (ADV) regretfully |
| work out | (V) happen or progress in a satisfactory way |
