Английский нужно выбрать правильную форму глагола

Выберите правильную форму глагола
1)The Flexbile line...at out plant since 2010
a) Developed b) has developed c) has been developed

New methods...before they started this production
a) had been applied b) had applied c) applied

This new house...by the end of the year
a) will build b) is built c) will have been built