Our math teacher ________in our school for 20 years and he ________here when he was 23 years old.
There are many _________ animals in the zoo. Some of them are ________ cute.
It’s important _________ the same in a friendship.
I’m trying to sleep. Would you mind ________ the music?
---Remember this, John. ________ you work, ______grades you’ll get. --Thanks, Miss Rose.
Although they feel tired, _________they still go on working.