It is better to teach a man how to fish than ____________ him fish.
We are not sure if it _____ tomorrow . If it _____, we won’t go hiking .
Some of my friends are interested in science, but none of them can tell ________.
______ your English teacher ______ you ?
They were talking about the persons and things _______ they saw in the factory.
Not only the students but also their teacher_______ the Great Wall before.