--Everyone wants to keep healthy without too much effort.--So let's start from our mouth by _______ those healthy foods, which people can easily get in their daily life.
Who is the man over there? Is it Mr. Wu? — It ________ him, but I am not quite sure.
I didn’t see Tom last night. Where was he? --- He______ an interesting book at home.
Nobody can live________ fresh air and clean water.
My brother is honest boy, he never tells a lie.
—Hello, may I speak to Sandy, please? —_________.