People will experience negativity in the workplaces when they lose ______.
Christine Karman
广告书刊()办公用品广告
Part B
Look at the pictures below and write an essay of about 120 words making reference to the following two points:
a description of these two picturesyour comment on this phenomenon
Medical researchers are painfully aware that there are many problems __ (他们至今没有答案).
公益广告()广告稿