20. _________raining hard for 3 hours wi
题型:选择题
问题:
20. _________raining hard for 3 hours without stopping.
21.
A.It is
B.It was
C.It has been
D.It had been
20. _________raining hard for 3 hours without stopping.
21.
A.It is
B.It was
C.It has been
D.It had been