Point correct tense:

The correct tense in this sentence is the present perfect tense, formed with the auxiliary verb "have" and the past participle "been." This tense is used to describe actions that began in the past and continue up until the present time.

The correct tense in this sentence is the present tense, formed with the verb "is." This tense is used to describe actions or states that are happening now.

The correct tense in this sentence is the future tense, formed with the auxiliary verb "will" and the base form of the verb "come." This tense is used to describe actions that will happen in the future.

The correct tense in this sentence is the present continuous tense, formed with the auxiliary verb "are" and the present participle "having." This tense is used to describe actions that are happening now or in the near future.

The correct tense in this sentence is the past perfect tense, formed with the auxiliary verb "had" and the past participle "been." This tense is used to describe actions that were completed before a specific time in the past.

11. We have already been to many interesting places. have ..been =Present Perfect Active
12. Your idea is perfect! is=Present Simple Active
13. Will you come to me tomorrow at 6 p.m.? -will come=Future Simple Active
14. We are having lunch now -are having=Present Continuous Active
15. This project had been finished when you came-had been finished=Past Perfect Passive; came=Past Simple Active