第一节：单项选择（每小题0.5分）
1. with the studies of all his students, Mr Johnson went to school as soon as he finished the meeting.
A. Concerning B. Being concerned C. To concern D. Concerned
2. Only a human being.
A. when is it hungry a lion will attack
B. when it is hungry will a lion attack
C. when it is hungry a lion will attack
D. when is it hungry will a lion attack
