1.On Feb 27, Chinese Premier Wen Jiabao took part in _____ online chat with Chinese netizens, who expressed interests and concerns over property prices, inflation, ________wealth gap and other social issues.

A. the ; a          B. an ; /        C. the; the       D. an ; the

2. —— We didn't find Smith attending the lecture.

—— No one ____ him about _____ a lecture the following day.