The two dogs started to fight, so we tried to _____ them.
---Do you know our home town at all? --- No, this is the first time I _____ here.
I can't _____ what you said because you spoke too quickly.
_______, China may have the largest number of English learners in the world.
Miss Gao asked her mother if she _______ to the hospital the day before when she was out.
The two men had hardly had time to ________what had happened when they were thrown violently into the sea.