[ Vocabulary ]
The ________ mixture of chemicals in the lab made the students feel sick.
A. decisive
B. incompetent
C. potent
D. righteous
Select your answer:

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Grammar › ViewI _______ two reports so far.
A. have been writing
B. has been writing
C. have written
D. has written
Grammar › View
She heard someone ____ last night.
A. cry
B. cries
C. cried
D. was crying
