Jack112 1. Plans and schedules are changed at the last minute, which tests your patience. (How come 'tests' is not 'test' ?
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Jack1121. Plans and schedules are changed at the last minute, which tests your patience. (How come 'tests' is not 'test' ? Could you give an example of 'test' with that type of idea? Thanks.)
"[The fact that] plans and schedules...." is the singular subject of the sentence.