一些现在完成时英语题.分高.
1.She is the most beautiful girl I have ______ seen.
A.never B.not C.ever D.yet
2.---Have you ______ milked a cow
---_____.
A.ever,Ever B.never,Never C.ever,Never D.never,Ever
3.Helen _______ a book about China last year,but I don't know whether she has finished it .
A.has written B.wrote C.had written D.was writing
用所给动词的现在完成时态填空.
Jim ______ (come,not) yet.He will be back in a minute.
为什么第三个选择题是C？