1. The villagers, _________ had been damaged by the flood, were given help by the Red Cross.

A. all of their homes                        B. all their homes

C. whose all homes                         D. all of whose homes

2£®The novel was completed in 1978£¬        the economic system has seen great changes£®

A£®when    B£®during which        C£®since then        D£®since when