Ответ:

1-has have

2-has done

3-has willing

4-has supposed

5- has bounded

6- has have

Объяснение:

Если не правильно большой сори

Ответ:

1. He has been disappointed about leaving the research group  

2. All the tissue samples were supposed to be due by now

3. Dr. Lee was willing to carry out his experiment in public

4. Ryan was supposed to write the research paper

5. Their theory is bound to be proven by now

6. The accident should have destroyed all the tissue samples. Fortunately, it didn't

Объяснение: