单项选择题A.Because he was of ill health.B.Because he was in a bad mood.C.Because his wife abandoned him.D.Because his immune system was not strong enough.
单项选择题A.The air pollution is caused by the development of industry.B.The city was poor because there wasn’t much industry then.C.The woman’s exaggerating the seriousness of the pollution.D.He might move to another city very soon.