A person ________ with H7N9 viruses will be more likely to die of lung dysfunction.
It is most instructive lecture that I _______ since I came to this school.
The shocking news made me realizeterrible problems we would face.
—That must have been a long trip. —Yeah, it________us a whole week to get there.
Maybe if I________ science, and not literature then, I would be able to give you more help.
It is still under discussion __________the old bus station should be replaced with a modern hotel or not.