Помогите плиз
Срочно нужно

They never can be able to appreciate your kindness. 2. I was sure you could translate that article after you had translated so many texts on physics.3. You can be able to go to the country when you have passed your last exam.4. We can pass to the next exercise when we have done this one.5. I can be able to give you me book for a couple of days after I have it.6. He can ski for ten years.7. We knew that she could swim since childhood.8. You can not be able to take part in this serious swimming competition until you have mastered good skills. 9. I could not solve the problem before he explained it to me.