专八改错练习及详解(18)

专八改错练习第十八篇：

Yesterday afternoon John and I were walking alonga road
where we heard someone shout "Help! Help!" He wasin __1__
a lake, about a hundred feet from the shore. There wasa __2__
small boat nearby. We knew immediately whathappened. __3__
He had fallen out of the boat and could not swim good enough __4__
to reach it or to get to the shore. As we ran towards the lake I
saw him sunk, and I was certain that he would drown. But in __5__
a moment his head appeared again. Quickly John took out his __6__
shoes, jumped into the water and started swimming toward
the drowned man. He reached him just as the man went down __7__
again. He was close enough as to stretch out his hand and try __8__
to take hold of the man's clothes or his hair before he sank.
But the man threw out his arms in fear, caught John across the __9__
neck, and began to draw him down under the water. John
fought to keep his head above the water and at the same time
tried to swim toward the boat, pulled the man with him. __10__