[ If vs. Unless ]
_ _ _ _ _ _you stop smoking, you’ll be seriously ill.
A. If
B. Unless

Random Topics:
Modal Verbs & Reflexive PronounsConjunctions and PrepositionsPast ParticipleConjunctions - ConnectorsParallelism and Subject Verb AgreementTypes of Sentence StructureVerbal TensesToo or EnoughZero and First ConditionalsSimple Past Tense and Past Perfect TenseOther quiz:
Grammar › ViewHe looks for any excuse he can blow off his ____ to do housework.
A. commitment
B. obligation
C. assignment
D. responsibility
Grammar › View
Mario __________________ TV.
A. are watching
B. is watching
C. is watches
D. watching
Modal Verbs › ViewThere was something wrong with the machine. I ___ wash my clothes with my hands yesterday.
A. can
B. would
C. ought to
D. had to
IN, ON & AT › View
His daughter was born _____ the 24th of August.
A. IN
B. ON
C. AT
D. [ – ]