[ Grammar ]
what is the past form of study?
A. studied
B. study
C. studies

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Vocabulary › ViewLand, labor, and capital
A. Capital
B. Product possibilities
C. Factors of production
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Since or for are used in which tense?
A. Present Perfect
B. Present Perfect Continuous
Grammar › ViewFind the question
A. What is the tortoise doing?
B. Where is the bathroom
C. What is your dog’s name
D. Can I go to the baseball game
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I recommend that he ____ aware of the situation.
A. be
B. will be
C. to be
D. is
