[ Modals of Obligation and Permission ]
You ——- use a helmet is for your safety
A. must
B. don´t have to
C. need
D. have to

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Grammar › ViewI have been working as a software engineer for the past five years. My ________ is very demanding, but I enjoy it.
A. occupation
B. accent
C. colleagues
Grammar › View
Who ______ lunch?
A. did buy
B. bought
C. does buy
Contractions and Conjunctions › View__________ foot did I just step on?
A. Who’s
B. Whose
Grammar and Vocabulary › View
It’s getting … outside. Let’s go home.
A. better
B. on my nerves
C. dark
D. into trouble
