Select every option that correctly completes the sentence "She ____ the negotiations last spring."

Explanation

Last spring calls for the past simple, and this verb spells its past with three letters. The base spelling and the past form are habitually confused in writing, so the four-letter base often turns up in sentences where a past tense is required. The three-letter past also follows have, so one spelling covers both past uses; leaded and leded belong to no English paradigm.