A. IN B. ON C. AT D. BYA. ADVISED B. ADVISES C. ADVISING D....

47. - 30 BAI TRAC NGHIEM VOI KEYS FOR 9 P
30 BAI TRAC NGHIEM VOI KEYS FOR 9 P

47. A. in B. on C. at D. by

A. advised B. advises C. advising D. was advised