IF YOU DON’T WORK MUCH HARDER, YOU WON’T PASS THE EXAM._ UNLESS YO...
21.
If you don’t work much harder, you won’t pass the exam.
_ Unless you__________much harder, you__________the exam.
A. work / will pass
B. don’t work / will pass
C. don’t work / won’t pass
D. work / won’t pass