Question

There were lots of people at the fancy dress party, some of _______ had made great efforts with their costumes. ( relative clause )

Answer 1

"the people"

Step-by-step explanation:

We would add in "the people" into the missing space because we are refering to the people as only people make constumes

people -> costumes

We would add a "the" in front because if we just add people it sounds rather odd and we need to specify which people.

Have a nice day! :D