There is one sentence in the choices below that does NOT have a grammar error by shifting mood or verb voice incorrectly. Which sentence is it? (Illuminate) (1 point)
When the operator turned on the machine, a squeaking sound was heard.
Two children left the classroom without permission, but they were found immediately.
All members should register for the trip by noon Friflay, and don't be late.
Read the first two chapters, and then you should meet with the study group.