It’ssaidthatagiantrockwaslocatedintheNorthSeabutonceman...

問題詳情：

It’s said that a giant rock was located in the North Sea but once many boats and ships   16   (strike) it and sank．

About a century years ago，a kind and imaginative minister came up with an idea to have a buoy (浮標)  17   (fasten) to the rock．On the top of the buoy   18  (place) a bell，  19    would ring whenever any ships got closer．When hearing the bell ringing，sailors knew where the rock was and stayed safe．One day, a sea robber Rover happened to sail not far away from the rock．

Seeing    20   buoy floating in the water，he decided to play a trick．Soon his crew broke the chain that held the buoy, let the bell go into the water and then sailed away．In the following weeks，they robbed many    21    ships around the seas and filled the ship with a great   22    （vary) of treasures．Unfortunately, when returning，they themselves had no idea how to get away from the terrible rock   23   the ring．The ship was moving swiftly in the dark    24    there was a great crash．  25   was the very rock and the ship began to sink．

【回答】

16． struck   17. fastened  18. was placed   19. which   20. the   21. other  22  variety   23. without   24. when 

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