4. I can't understand Michael. I've never .................. understand him.
5. He used to ................... stand on his head but he can't do it now.
6. I can't see you on Saturday but I................. meet you on Sunday morning.
7. Ask John about your problem. He might ................. help you.
4. I can't understand Michael. I've never ....been able to.... understand him.
5. He used to ...be able to.... stand on his head but he can't do it now.
6. I can't see you on Saturday but I......can...... meet you on Sunday morning.
7. Ask John about your problem. He might .....be able to.... help you.
- Mình nghĩ chắc là điền can hoặc be able to :))
#Ame