.—Hello! May I speak to Mr. Hu?
—Sorry, he isn’t in. _________
A.Speaking. | B.Yes, you may. | C.This is Millie speaking. | D.I’m Millie. |
.—Hello! May I speak to Mr. Hu?
—Sorry, he isn’t in. _________
A.Speaking. | B.Yes, you may. | C.This is Millie speaking. | D.I’m Millie. |