present, past and future perfect tenses

I ... read the terms and conditions.

• have

• has

The businessman ... offered her three times the value of her property, but she's not interested.

• 've

• 's

Have you ever ... the beautiful desert scenery?

• see

• seen

… Mahesa been to New Zealand?

• is

• has

My cousin ... as a medical assistant for almost a year.

• has worked

• have worked

Someone ... left the letter on your desk.

• have

• has

Julie as well as her sister ... used organic products for skin care since January.

• have

• has

One of the students ... completed the final exam.

• 've just

• 's just

How much have you ... for clothes that you never wear?

• spent

• spend

He hasn't ... a bribe for education services, has he?

• paid

• pay