The lion is considered the king of the forest , for it is a(n)________ of courage and power.
While reading, you'd better make a mark ___ you have any questions.
Don't keep your mouth ___ if you want to improve your spoken English.
My classmates, Li Ming, was highly praised for ___ a good deed.
There are many pine trees on ___ of the street.
I don't think this question is worthy ____.