21.There is serious lack of water in the southwest,but to certain extent the situation has improved because some facilities have been fixed.
A.a;/ B./;a C.a;a D./;/
22.I didn’t understand the accent when I first moved here but I quickly with the local people fluently.
A.got accustomed to communicating B.was accustomed to communicate
C.was used to communicate D.used to communicating
