Explanation:

- Leaving his car with the valet, he (1)_______ the hotel and joined the large crowd milling (2)______.

- This sentence describes someone entering a hotel and joining a crowd. Words like "entered" or "joined" would fit the context for (1).

- He found a badge waiting for him (3)_______ the receptionist’s table and took his (4)______ in the rear of the hall.

- The badge is probably on or at the receptionist’s table. For (4), "seat" or "place" make sense.

- When the place was (5)_______ the moderator welcomed the crowd.

- This suggests the venue was fully occupied before the event began. Words like "filled" or "full" are suitable.

- Option:1, filled

- This indicates completeness and makes perfect sense contextually.

- Option:2, completed

- This is less about physical filling and more about finishing tasks.

- Option:3, stuffed

- Implies over-filling; not appropriate for the context.

- Option:4, empty

- Opposite meaning needed here.