[ Grammar ]
Where _________________________ in 2015?
A. are they traveling
B. do they travel
C. did they travel

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Vocabulary › Viewexpress or state indirectly
A. Inquire
B. Imply
C. Identify
D. Formulate
Phrase or Clause › View
With the greenish walls spanning from brick to brick, corner to corner, seemingly endlessly but albeit finite in their existence.
A. Phrase
B. Dependent Clause
C. Independent Clause