IT IS HOT IN THE DAYTIME BUT THE TEMPERATURE _____ SHARPLY AT THE...

19. - TONG HOP BAI TAP VE TU LUAN TONG HOP BAI TAP VE TU LUAN
TONG HOP BAI TAP VE TU LUAN TONG HOP BAI TAP VE TU LUAN

19.

It is hot in the daytime but the temperature _____ sharply at the night.

A. slips

B. drops

C. reduces

D. flows