AT LAST THE BUS CAME. WE...FOR HALFAN HOUR. A. WAITEDB. WAS WAITIN...

72. - TONG HOP BAI TAP TRAC NGHIEM VE CAC THI TRONG TIENG ANH
TONG HOP BAI TAP TRAC NGHIEM VE CAC THI TRONG TIENG ANH

72.

At last the bus came. We...for half

an hour. A. waited

B. was waiting

C. have waited

D. had been waiting