1．It ________ (使惊恐) me to think I was alone in the building.
答案：scared
2．The company has ________ (把……作为目标) adults as its primary customers.
答案：targeted
3．________ (幸运地) for him, he was very soon offered another job.
答案：Fortunately
4．This species of animal is on the verge of ________ (灭绝).
答案：extinction
5．I eventually realized I had to change my ________ (态度) toward medical practice.
答案：attitude
