Rearrange the words in correct order to make meaningful sentences

VII/ Rearrange the words in correct order to make meaningful sentences.(2pts)

a. Robots/ be/ will/ able/ do/ to the/ all/housework/ of/ instead/us//.

b. could/ I/ a/ bike/ ride / when / I / was / ten//.

…………………………………………………………………………………

c. people/ there/ less/ pollution/ If/ recycle/ be/ air/ will//.

………………………………………………………………………………..

d. past/ robots/ cannot/ teach/ class/ but/ they/ now//.………. ……………………………