fill in the gaps with can can't could couldn't or was/wasn't able to.
1. After saving their money for ten years, they _____buy a house.
2. Sam and Beth ____speak Italian fluently, can't they?
3.____you tie your shoelaces when you were four years old?
4.It was a very tricky question, but Paul______answer it.
5.I_____hear what they were saying because the music was too loud.
6.Although it was difficult, the children____build a tree house .
7. Susan ____come to the phone. She is busy/

1. After saving their money for ten years, they were able to buy a house. 2. Sam and Beth can speak Italian fluently, can't they? 3. Could you tie your shoelaces when you were four years old? 4. It was a very tricky question, but Paul was able to answer it. 5. I couldn't hear what they were saying because the music was too loud. 6. Although it was difficult, the children were able to build a tree house. 7. Susan can't come to the phone. She is busy.