Topics: Vocabulary
The _______________ is the solid, outer layer of the earth that consists of the crust and the rigid upper part of the mantle.
A. Mantle
B. Stratus
C. Lithosphere
D. Core
Select your answer:

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Grammar › ViewWhere _____your grandparents _______? In a town about 50 miles away.
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This club is for members only. You can’t go in _______ you are a member.
A. In case
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C. If
