[ Grammar ]
The astronaut __________ for years before the launch.
A. trained
B. had trained
C. was training
D. trains

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Grammar › ViewThe little girl asked what _______ to her friend.
A. has happened
B. happened
C. had happened
D. would have been happened
Grammar › View
The verb is the word that tells what the subject does. What is the verb of the sentence “The dogs run in the park”?
A. Run
B. Dogs
C. The dogs
D. Runs
