Correct Shifts in Verb Voice/Mood Practice Test

Shift from imperative to conditional; revise: "Please listen to the directions, and turn in your phones before the test."

No shift; "would turn" is the correct polite form for instructions.

Shift from conditional to imperative; revise: "Please listen to the directions, and you would turn in your phones before the test."

Shift from active to passive voice; revise: "Please listen to the directions, and your phones would be turned in before the test."