单项选择题
W: Why didn’t you come here yesterday, John M: I’m sorry, sir. My mother was ill.
A．John was expected to come yesterday. B．John didn’t come because he was ill. C．The man was John’s father.
A．which B．that C．if D．what
A．to kill all the poultry B．to eat no more chickens C．to from a healthy habit D．to keep separated from others