Il congiuntivo imperfetto

that he arrived

(a)  

that we talked a lot

(a)  

that he slept all day

(a)  

that he read every day

(a)  

that they studied French

(a)  

that he understood

(a)  

that I worked

(a)  

that we bought

(a)  

that you ate (singular)

(a)  

that they found

(a)