[ Grammar ]
Select the proper form of the missing word.
She knew ________ was a solution to the problem.
_
A. their
B. there
C. they’re
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Grammar › ViewShe didn’t stay at the gym because it was …………… crowded.
A. too
B. enough
Vocabulary & Grammar › View
. He had his robot vacuum cleaner ____ by the engineer.
A. activate
B. to activate
C. activating
D. activated
Grammar › ViewA _______ of books
A. shelf
B. story
C. library
D. desk
Grammar › View
the throat
A. nasal cavity
B. pharyngeal cavity
C. oral cavity
D. tooth cavity