Question

By the time they __________ the summit, the sun had already set.

• A. reach
• B. reached
• C. reaching
• D. reaches

Answer 1

Answer:

B. reached

"Reached" is the past tense form used because it describes an action completed before another action in the past (the sun had already set). "Reach" is the base form, "reaching" is the present participle, and "reaches" is present tense third person singular.