--- Betty this morning?
--- Not yet, but she is sure to be here before noon.
A. Have you seen
B. Will you see
C. Do you see
D. Did you see?
网友回答
(答案→)A. Have you seen
B. Will you see
C. Do you see
D. Did you see?
解析：由答语中的“Not yet”可断定此题应选A。现在完成时态的用法之一是“表示过去某一时间发生的动作对现在造成的影响或结果”。