--- I will come to attend your lecture at 10:00 tomorrow.

　--- I’m sorry, by then my lecture will have ended and I ______ my guests in my office.

A．is being met

B．will meet

C．will be meeting

D．will have met

清华大学社会学系李强教授的研究结果表明中国的社会结构是（）。

A.丁字形

B.V字形

C.倒丁字形

D.倒V字形