情态动词I have been driving for 20 years.You__(not drive)for 20 years.you re only 30 now.
问题描述：
情态动词I have been driving for 20 years.You__(not drive)for 20 years.you re only 30 now.
应该用什么情态动词?
SAM and i ___(be)friends until he called me a coward.
答
I have been driving for 20 years.You can't have been driving for 20 years.you're only 30 now.can't do不可能SAM and i had been(be)friends until he called me a coward.在sam叫我是懦夫之前,我们曾经一直都...