Follow the example and do the same using YET: example: She has been in the shop. (buy anything) - She has been in the shop but she hasn't bought anything YET. 1. I've written to them three times. (not reply) 2. I've asked you again and again. (not do it) 3. I lent him $$10 last month. (not give it back) 4. He lost his pen a week ago. (not find it) 5. He borrowed my book last year. (not give it back)