万一你碰见桑妮，告诉她她欠我一封信。（should）

我把我用来写小说的钢笔弄丢了。（用定语从句）

尽管今早看上去要下雨，结果却是晴天。（turn out）

那些女孩每天早上锻炼是为了减轻10磅体重。（aim at）

However great achievements the future may have in store for China, it is likely that many of them will be born in northwestern Beijing.

But it is no need to worry if you have never skied before.

Locating in southern Austria, Kitzbuhel is a paradise for skiers.

It was during the “March on Washington DC” in 1963 when he gave the speech “I have a dream.”

House conditions for blacks in Birmingham were bad and there were few jobs for blacks.