问题
选择题
--- ______ 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?
答案
答案：A
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”。