填空题
A briefcase containing over $ 10,000 in cash was found on a United Airlines flight that arrived in New York on Tuesday night. The bag is believed to belong to a passenger. So far, no one has contacted the airline to claim the money.
A.the teacher saves the trouble in doing that. B.learning is made comfortable in this way. C.the teacher can easily remember students’ names and faces. D.brighter students can help slower ones.
A.to B.by C.from D.in