[ Grammar ]
You ______ wear a helmet when you ride your bike. It’s the law.
A. should
B. must
C. ought to
Select your answer:

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Subordinating Conjunctions › ViewYou may leave the class … the bell rings.
A. if
B. before
C. after
D. until
Preposition › View
I do my homework ___ night
A. under
B. on
C. at
D. in
