当前位置：首页 >
综合英语（二）(00795) > 正文内容
As he ______ up since 4 a.m, he is, no doubt, very tired now.
As he ______ up since 4 a.m, he is, no doubt, very tired now.
A.is
B.was
C.has been
D.had been
正确答案是C
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明：本文由翰林刷题小程序授权发布，如需转载请注明出处。
