[ Grammar: wishes and regrets ]
We should have ________ this years ago.
A. done
B. did
Select your answer:
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Gerund vs Infinitive › ViewAntonio is pleased … us Portuguese.
A. to teach
B. teach
C. teaching
Subject and Verb Agreement › View
With the intake stroke, the piston is moving downward. That _______ the gasoline and air to move into the engine as the arrow shows.
A. allow
B. allows