<span>A compressor is the part of the cooling system that pressurizes vaporized refrigerant to make it hotter.</span>
it would depend on whether the verb is singular or plural
The best thing you could do is read the book, or if in a hurry watch the Anne Frank movie on Netflix, or you can do research on the different side characters like Mr. or Mrs. Van Daan, Mr. and Mrs. Frank, or her sister.
