Question

Active
Fill in the chart below
Active
They build houses with clay


They were building houses with clay

They will build houses with clay

Passive


Houses were built with clay

Houses have been built with clay


Tense

Present continuos


Present perfect

Answer 1

They were building houses with clay  - Present continuos 

They will build houses with clay - Future perfect

Houses were built with clay - Present perfect

Houses have been built with clay - Present perfect