WHISTLING AND _________ IN A RESTAURANT IS CONSIDERED TO BE IMPOLITE AND EVEN RUDE

10. - BAI TAP TRAC NGHIEM TIENG ANH 12 TU BAI DE BAI 7 0476
BAI TAP TRAC NGHIEM TIENG ANH 12 TU BAI DE BAI 7 0476

10. Whistling and _________ in a restaurant is considered to be impolite and even rude.

A. talking B. clapping hands C. smiling D. sighing