_____ 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 |
相关知识点
推荐套卷
_____ 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 |