[ Vocabulary ]
All Earth’s water, including liquid, vapor and ice forms
A. biosphere
B. hydrosphere
C. atomosphere
D. geosphere

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Grammar › ViewMy refrigerator, which is only about 5 years old, started leaking.
A. essential
B. nonessential
Grammar › View
Running along the National Mall, his iPod ran out of energy.
A. This sentence has a dangling modifier.
B. This sentence does not have a dangling modifier.
One of the girls ____ to go back home because she is not feeling well.
A. want
B. wanted
C. wants
D. wanting
Comma › View
Which sentence is correct?
A. Sincerely Robin,
B. Sincerely, Robin,
C. Sincerely, Robin
