Question

2. 1.... Nick for 10 years.1 known2 have known3 has known​

Answer 1

Ответ:

has known Nick for 10 years.

Объяснение:

has known Nick for 10 years. - знает Ника уже 10 лет.

Answer 2

The correct answer is:

2. have known

The sentence is in the present perfect tense, which requires the auxiliary verb "have" (or "has" if the subject is he, she, or it) and the past participle form of the main verb. In this case, "have known" is the correct form.