I want to know which is appropriate one to fill the gap in.
Leslie had a very strange thing __(happen) when she was in Romania.
- happen
- happening
- happened
Oxfor Grammar explains that I can use either infinitive or gerund to talk about experiences. However, in the other section, it also tells me that for passive, I can use past participle. So, in that sentence above, which one is appropriate and why? Thanks in advance!