Read the sentences. Akira sewed one button back on his jacket. Then, another one falls off when he put it on to go outside. Which correction of the underlined verb fixes the inappropriate shift in tense in the second sentence?

The first sentence uses the simple past tense: Akira sewed the button back on. The second sentence describes what happened next, so its verb should also be in the past tense: “another one fell off.” “Fell” is the correct past-tense form; the other choices do not fit the sequence of past events.

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