[ Grammar ]
Galileo and Newton established the scientific framework ———– others built new scientific laws on.
A. which
B. where
C. who
D. when
Select your answer:
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Articles › ViewIt’s going to rain. Take ___ umbrella.
A. a
B. an
C. the
D. no article
Grammar › View
Emma did very well on her english test. She _______ studied hard.
A. might have
B. should have
C. must have
D. shouldn’t have