Mike is only 15 years old. He is not _____________ to get a driver’s license.
It ________ about eight minutes for sunlight (阳光) to travel from the sun to the earth.
Talk to your teacher and you will get help ________ you have a problem.
We have friends to help us fight against pollution, and trees are one of ________.
Now, people regard drinking tea ________ a culture more than a habit.
Our mother earth gives us ________ we need in our daily life.