[ Grammar ]

I ______ (study) non-stop ______ 9:15.

A. I have studied non-stop since 9:15.
B. I have studied non-stop for 9:15.
C. I has study non-stop since 9:15.
D. I has study non-stop for 9:15.

Select your answer:
     


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Next quiz: Mixed General Quiz

The logging industry is carried ___ principally in the Adirondack Mountains.
a. on
b. to
c. in


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