_____ into use in April 2000, the hotlin
题型:选择题
问题:
_____ into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns.
A.Put
B.Putting
C.Having put
D.Being put
_____ into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns.
A.Put
B.Putting
C.Having put
D.Being put