Hesetupinbusiness（）hisownandwasverysuccessful.
C
「句意」 他独自一人开始经商，并且做得很成功。
「难点」 on one‘s own 是个常用的介词词组，意为“独自”;of one’s own 表示“某人自己的(东西) ”，如： I have a flat of my own. 我自己有套房子。
John'sscoreonthetestisthehighestintheclass;（）helastnight.
All of us would have enjoyed the party much more if there _____ quite such a crowd of people there.
AlthoughSPanish，heattendedthecourse.
_____ at in this way, the situation doesn ’t seem so desperate.