[ Adjective & Adverbs ]
Swanson identified magnesium deficiency ———- a casual agent in the occurrence of migraine headaches.
A. such as
B. like
C. so
D. too
E. as
Select your answer:

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Vocabulary › Viewobscurity, nothingness
A. befall
B. oblivion
C. dregs
D. fiasco
Grammar › View
There are some ……… on the roof.
A. cat
B. mice
C. bird
D. bat
