以ch结尾的单词变复数怎么变

　　Camp sites are usually situated along the coast, close to beaches.

　　野营地一般都位于海滨，靠近沙滩。

　　Hundreds of coaches will converge on the capital.

　　数百辆长途汽车将会在首都汇集。

　　The city boasts a wealth of beautiful churches.

　　这座城市拥有众多美丽的教堂。

　　This year the farm gathered 700,000 kilograms of peaches from trees planted in 1980.

　　这一年农场从1980年种的树上收了70万公斤桃子。

　　Every morning mother puts up lunches for the three children.

　　每天早晨母亲为三个孩子装好午饭。