He_____this painting for days.
A.has been working on
B.has worked at
C.has worked with
参考答案:A 他已经画了好几天了(他至今仍在画)
这是现在完成进行时,所以要用has been doing的形式
A.has been working on
B.has worked at
C.has worked with
参考答案:A 他已经画了好几天了(他至今仍在画)
这是现在完成进行时,所以要用has been doing的形式