Review the item:
At first, Rose __________ to tolerate Simon's lack of punctuality. His good looks compensated for her having to wait an extra ten or fifteen minutes. But once Simon's tardiness hit half an hour, Rose dumped him for a boyfriend who looked at his watch.

The blank requires the past tense of choose, an irregular verb. Chose is the simple past form.

Verb Simple
Present
Simple
Past
Past
Participle
choose choose(s) chose chosen

Choose, the form you picked, is present tense; it doesn't fit the timeframe of this item. Before you continue, review the rules for irregular verbs.

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