问题补充:
—Shall we go to Australia for the long holiday ?
--Sorry. I there twice.
A. have gone
B. was
C. have been
D. go
答案:
A. have gone
B. was
(答案→)C. have been
D. go
解析:句意:我们去澳大利亚度长假吧?对不起,我去过两次了。过去发生的事情对现在造成了影响,用现在完成时,have gone去……;表示这个在去的途中或已经到达某地;have been去过,表示已经回来,结合语境故选C。