What’s going on (grammatically) in this sentence?
Let’s simplify it.
“I’m wondering if I’m the only person who remembers…
…that there was a big plastic cow…(Band 6)
…there being a big plastic cow… (Band 7+)
Remember + ing form (or noun)
This form of 'remember' is used for memories.
What is your earliest memory?
Compare this with ‘remember to + infinitive verb’.
e.g. “Did you remember to lock the door?”.
Some verbs have different meanings when they are followed by the gerund or the infinitive.
For example: