单项选择题
She declined to travel at the（）of her company and paid for the trip herself.
A.charge B.admission C.expense D.tip
单项选择题 She is（）treatment at the hospital
单项选择题 The couple wanted to（）the black child they had been fostering.
单项选择题 The company is on the verge of bankruptcy, and hundreds of jobs are at（）
