Which is not a common usage mistake for an adult learning english as a second language? missing verb tenses dropped articles reverberation of word endings all of the above

Reverberation of word endings.

Verb tenses refers to the conjugation of verbs according to time and person. For example, saying "do" instead of "did" or "done."

The articles in English are "a," "an," "the." Not only is dropping them common, but also to pick the wrong one.

Reverberation is when a sound persists after the source of the sound is gone. An example is when a gong is hit with a mallet.  

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