John, I didn’t ask for the dictionary. Why ______ on my desk — Oh, I put it there just now in case you needed while writing your composition.

下列各句中，没有语病的一句是（ ）

He went totown _____sell one of his paintings.

Ted told his father he ______ his homework three hours before.

_Who is _____ English teacher, Lu Yu_ Mr Tian teaches _______ English.