[ Mixed General Quiz ]
What did you do yesterday?
I ________ yesterday.
A. study
B. studying
C. studied
D. studies

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Mixed General Quiz › ViewHopak ___ the famous traditional folk dance in Ukraine.
a. is
b. are
Vocabulary › View
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