Put the correct form of the verb clean in each gap. 
1. I enjoy__ the house every Monday morning . 2. It's Monday lunchtime and I ___ the house already . 3. I think most of the houses in my street __ at least once a week . 4. My mother says my father thinks the house __ by magic . 5. My friends arrived while I __ my room . 6. In the future , houses __ by robots .

1. I enjoy cleaing the house every Monday morning .

2. It's Monday lunchtime and I have cleaned the house already .

3. I think most of the houses in my street are cleaned at least once a week .

4. My mother says my father thinks the house is cleaned by magic .

5. My friends arrived while I was cleaning my room .

6. In the future , houses will be cleaned by robots .