WHEN CAN WE SEE MERCURY

19. - DAP AN DE THI THU TOT NGHIEP 2011
Tiếng Anh DAP AN DE THI THU TOT NGHIEP 2011

19. When can we see Mercury? - We can see it ________

A. just before sunrise. B. just before the sunset.

C. after the sunset . D. both A and C are correct.