1. This book tells _____life story of Robinson, who left ______ school and worked for a newspaper at the age of 16.
A. the ; the B. a; the C. the; ﹨ D. a; ﹨
2. Lung cancer is said to__________ the biggest health challenge to both aged men and women in that area over the past few years.
A. that it is B. to be C. that it has been D. to have been
3. Cathy was very tired; ________, she wouldn’t have slept at the meeting.
A. otherwise B. therefore C. though D. however
