MARY STOOD AT THE WINDOW. SHE STOOD ... IT.A. IN FRONTB. IN FRONT...

29. - 70 DE THI CHUNG CHI B TIENG ANH
70 DE THI CHUNG CHI B TIENG ANH

29. Mary stood at the window. She stood ... it.

a. in front

b. in front of

c. front

d. ahead of

 b