--description--

In the Present Perfect tense, time periods are often indicated using the prepositions for or since. For expresses the duration of an action or situation, while since indicates the starting point of the action or situation.

In this dialogue, Sarah mentions the time period to express when her passion for collecting started.

--fillInTheBlank--

--sentence--

I've been a collector BLANK I was 8 or 9 years old.

--blanks--

since

--feedback--

The preposition expresses the starting point of an action or situation in this context.

--scene--

json

{
  "setup": {
    "background": "company2-center.png",
    "characters": [
      {
        "character": "Sarah",
        "position": {"x":50,"y":0,"z":1.4},
        "opacity": 0
      }
    ],
    "audio": {
      "filename": "3.2-3.mp3",
      "startTime": 1,
      "startTimestamp": 20.72,
      "finishTimestamp": 23.24
    }
  },
  "commands": [
    {
      "character": "Sarah",
      "opacity": 1,
      "startTime": 0
    },
    {
      "character": "Sarah",
      "startTime": 1,
      "finishTime": 3.52,
      "dialogue": {
        "text": "I've been a collector since I was 8 or 9 years old.",
        "align": "center"
      }
    },
    {
      "character": "Sarah",
      "opacity": 0,
      "startTime": 4.02
    }
  ]
}