强化练习：给下列句子中未用标点符号或用错的地方下划线，并在句

强化练习：给下列句子中未用标点符号或用错的地方下划线，并在句末的空格中填进正确的标点符号以及该符号前面的一个词。

1.Horse breeding has become a big businessand investors are supplying large sums for thorough breeds. business，

2.Most thoroughbreds are sdld as yearlings it is usually one year before they can race.yearlings；

3 Investors’expectations arehigh therefore，competitive bidding for breeding animals is brisk.high；

4.Some investors uNe thoroughbred horses as tax shelters，these investors“write off”the expenses of maintaining the horses.shelters；

5.Mr.Marks invested，Mrs.Hiram was interested，and Mr，Phipps declined.OK

6.Important breeding is being conducted at the Peachtree Ranch， Rome，Georgia;the Blue Meadows Ranch，Lexington，Kentucky;and the Flag Is Up Ranch，Buellton，California.OK

7.Stallions yield the highestprices；hut mares can also be extremely expensive.prices，

8.The average auction price has tripled in the last five years profits from breeding have climbed even faster.years；

9.Several investors may form a syndicate to buy a good horse，the syndicate then shares expenses and spreads risks.horse；

10.Horse breeding can be an exciting and profitable venture，thus many investors are choosing horses over stocks and bonds.venture，；