WAYS OF SOCIALIZING SƯU TẦM VÀ BIÊN SOẠN
18.
Raising hand and waving are of the _________ form of communication.
A. uncountable
B. countable
C. non-verbal
D. verbal
18.
Raising hand and waving are of the _________ form of communication.
A. uncountable
B. countable
C. non-verbal
D. verbal