Benjamin Franklin invented a lot of things which made people’s life easier. One of his earlier inventions was paddles for swimming. Ben had            if there were some way to help people       faster. He thought hard and slowly a picture of swimming paddles grew in his     . The paddles must be neither too big nor too small. The wood which      the paddles must be neither too heavy nor too      .
He began to work on the paddles and a few days later the paddles were finished. And then on the next Saturday afternoon Ben decided to try them out at Green’s pond       there were about a hundred boys waiting. All of them had heard of Ben’s idea and wanted to see whether the paddle would      . They were talking to each other, “What’s to be done if the paddles don’t work?” “What if he goes down?”
When Ben got into the      , he began to paddle. At first the swam      , then faster and faster until he was going through the water like a fish. The boys had       seen such a fast swimmer. The paddles did work. All of the boys cheered loudly for Ben, jumping up and down with joy.

A．doubted B．wondered C．asked D．tried

A．travel B．run C．boat D．swim

A．heart B．family C．hand D．mind

A．was used to B．was used for C．used as D．used with

A．light B．small C．big D．slow

A．that B．where C．which D．when

A．welcome B．act C．work D．do

A．water B．river C．sea D．boat

A．slowly B．carefully C．easily D．happily

A．always B．almost C．never D．seldom