Question

Thewater-recycling project, according to the agreement, ________ by 2005.

1. A.
   will havebeen put to use
2. B.
   will putinto use
3. C.
   will beput to use
4. D.
   will haveput into use

Answer 1

C
主语是the water-recycling project，故用被动语态，根据后边时间状语判断，应用将来时，选择C。put to use使用，利用。