1. We are ... to survive without the sun.

2. He is able ... really fast.

3. Anna has ... to learn foreign languages since she was 3 years old.

4. They ... able to meet you yesterday because they have an urgent meeting.

5. These terms ...be discussed soon.

6. … you … to go out for dinner with me tomorrow.

7. I don't understand this, so I ... to explain to you.

8. That is so strange! Usually he learns very slowly, but today he ... understand very fast.