Question

large crowds____at the station when the Railway minister______(wait , arrive)r​

Answer 1

Answer:

Large crowd was waiting at the station when the railway minister arrived.

Explanation:

Answer 2

Answer:

Large crowds were waiting at the station when the railway minster arrived.

Explanation:

Question: Large crowds ____ at the station when the Railway minister _____.

Now we can fill in the blanks as:

Large crowds were waiting at the station when the railway minster arrived.

Here, arrives is used as the railway minister is a single person.

Hope this helps you in understanding the above concept!

I wish you nothing but the best for the future!