Mr. and Mrs. Black back .
A. hasn’t e, yet
B. haven’t e , yet
C. haven’t e, already
D. hasn’t e , already
网友回答
A. hasn’t e, yet
(答案→)B. haven’t e , yet
C. haven’t e, already
D. hasn’t e , already
解析:Mr and Mrs Blacks构成复数概念,故应用haven’t;在完成时的否定中用yet,表示“还没、尚未”,already 用在肯定句中,表示已经。