[ Grammar ]
Don’t disturb John. He‘s ______ for his Doctorate.
A. study
B. has studied
C. studying
D. studied
Select your answer:
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Modals of Obligation and Permission › ViewIn the US you can leave a tip in the bar if you want, but you _____.
A. mustn’t
B. couldn’t
C. don’t have to
Grammar › View
What is plural form of thief?
A. thiefs
B. thiefes
C. thieves