---Do you know who invented ________ telephone?---No. But it is really________ most important invention.
____ is amazing that such a young girl can be so good at shooting.
Water, which seems so simple and common, is makes life possible.
Look! That fellow is too sleepy to work. He ______ up reading until midnight.
According to Lee, it was Ben’s carelessness that _______ the accident. But Ben _______ his wrong doing.
I believe that those mountains ________ with trees in a few years’ time.