完成句子 11.He was so excited that l couldn't make him _____ (平静下来). 12. We are all _________ (相处得很好) each other in our class. 13.She _____ (为....担忧)her son's future. 14.There has been ________ (一系列)cars accidents at the crossing. 15.Filling the blanks ________ (根据)what I have said.