Ex1: Choose the best answer to complete each of the following sentences.
1. We..........a project to improve the living conditions for homeless people
two days ago. They.........in difficult conditions for a long time.
A. attended/ lived B. have attended/ lived C. attended/ have lived
D. have attended/ have lived
2. My mother......dinner at home because she.......to care for mygrandma in
the hospital last evening. A. didn't eat/ had B. ate/ had
C. hasn't eaten/ had D. has eaten/ has