busy ---> bustling
change: if ---> whether
in a sentence like that, I believe 'whether' should be used.
busy ---> bustling
busy ---> bustling
所有跟帖:
• 回複:change: if ---> whether -戲雨飛鷹- ♀ (0 bytes) () 03/21/2010 postreply 08:46:27