He set up in business（）his own and was very successful.
A、inC
「句意」他独自一人开始经商，并且做得很成功。
「难点」onone‘sown是个常用的介词词组，意为“独自”;ofone’sown表示“某人自己的(东西)”，如：Ihaveaflatofmyown.我自己有套房子。
Of course，（）most immigrants did not get rich overnight ， but the of them were eventually able to improve upon their former standard of living.
_____atinthisway,thesituationdoesn’tseemsodesperate.
LastMarchthe__________ofa19thcenturycargoshipwasfoundbyanunderwaterarchaeologicalteam.
The beach is in an ideal（）to draw tourists.
.If you have really been studying English for so long, it’s about time you _____ able to write letters in English.
