WE MIGHT RAISE OUR HAND AND WAVE TO OUR FRIEND AS A _________ THAT WE SEE HER OR HIM

4. - ON THI TRAC NGHIEM TIENG ANH 12BAM SAT
ON THI TRAC NGHIEM TIENG ANH 12BAM SAT

4. We might raise our hand and wave to our friend as a _________ that we see her or him.

A. signature B. sign C. signal D. sigh