Question

unit exam: editing and proofreadingtense: the time period in which a verb is happening- past: already happened- present: happening right now- future: will happenwhat are the tenses of \jump\?which tense is used in the following sentence?they had been studying for days.perfect presentperfect continuous pastcontinuous future

Explanation:

The sentence uses the structure "had been + verb-ing", which matches the definition of the past perfect continuous (perfect continuous past) tense shown in the provided tense table, indicating an ongoing action that was completed before another past event.

Answer:

perfect continuous past