Here are the answers:
1. Olga **got stung** by a bee while she was sitting in the garden.
2. As he was walking through the park, Tom **got hit** by a baseball.
3. Please be careful with those boxes. I don't want anything to **get damaged**.
4. Mary is very popular. She often **gets invited** to parties.
5. There was a fire in my apartment block but luckily no one **got hurt**.
6. While travelling, you must always watch your bags or they might **get stolen**.
**Explanation:**
The exercise uses the verb 'get' instead of 'to be' to form a passive construction, implying an action happening by accident or unexpectedly. The form is 'get' + past participle. We need to choose the correct verb from the list given in the prompt.
1. 'get stung' - past participle of 'sting', describes something that happened to her unexpectedly.
2. 'got hit' - past participle of 'hit', implies an accidental contact.
3. 'get damaged' - past participle of 'damage', describes a possible unwanted outcome.
4. 'gets invited' - past participle of 'invite', Mary is invited by other people, not the other way around.
5. 'got hurt' - past participle of 'hurt', describes the absence of people being hurt as a fortunate unexpected event.
6. 'get stolen' - past participle of 'steal', describes the potential for loss.