19．16．Who is Alice？
A．Anna's mother．
B．Anna's aunt．
C．Anna's sister．
17．What time does Alice usually finish her work？
A．At 5：30p．m．
B．At 6：00p．m．
C．At 6：30p．m．
18．How often does Alice work at night？
A．Once a week．
B．Twice a week．
C．Twice a month．
19．What was the matter with Anna last Friday？
A．She had a cold．
B．She had a toothache．
C．She had a stomachache．
20．What did Alice ask Anna to do？
A．To have a good rest．
B．To drink some hot water．
C．To take some medicine．
