—Shall I call you at 10 tomorrow morning?—Better not. I a lecture to some university stu

问题补充：

—Shall I call you at 10 tomorrow morning?

—Better not. I a lecture to some university students. Just send me a message.

A. would give

B. will be giving

C. will have given

D. am giving

答案：

A. would give

(答案→)B. will be giving

C. will have given

D. am giving

解析：句意：--明天早上10点我打电话给你好吗？--最好不要。我将正在给一些大学生做讲座。就发个短信给我吧。从上下文可知：给一些大学生做讲座是在明天早上10点，所以是将来进行时，选B。