[ If vs. Unless ]
_ _ _ _ _ _ _they’re late again, I’ll be furious.
A. If
B. Unless

Random Topics:
Ordering AdjectivesFuture Continuous TensePassive Voice of TensesFuture Simple TensesVerbsModals and InversionPast Simple & Past ContinuousAdverb Clausesmust/shouldIdentifying TensesOther quiz:
Many vs. Much › View______________children are in the class?
A. How many
B. How much
Tenses › View
While I __________ the room, I found an old photo.
A. cleaned
B. have been cleaning
C. was cleaning