Many animals sleep a lot when young, but sleep much less when they get older, just________is the case with human being.
--Let me introduce myself. I’m Albert.--____.
The pictures __the visitor took at the river bank __ to the students.
--What was the party like? --Wonderful.It’s years ___ I enjoyed myself so much.
--Will you bring me some coffee? --____.
Readers can ___ quite well without knowing the exact meaning of each word.