---Could I have a window seat ? ---All r
题型:选择题
问题:
---Could I have a window seat ?
---All right. Your flight _____ boarding at Gate 18 at 2:15.
A.have begun
B.began
C. is to begin
D.begins
---Could I have a window seat ?
---All right. Your flight _____ boarding at Gate 18 at 2:15.
A.have begun
B.began
C. is to begin
D.begins