54.By five o’clock this evening ,the spaceship ________ eighty times round the earth .A .has traveled B .will have traveled C .has been traveling D .traveled
问题描述：
54.By five o’clock this evening ,the spaceship ________ eighty times round the earth .
A .has traveled B .will have traveled C .has been traveling D .traveled
答
b
答
A .has traveled
By five o’clock this evening在之前已经完成,用完成时态