请教英语难题Recently,my husband and I had the opportunity to do something good for two people who were complete strangers to us.It made us feel so good to be able to do it that I thought I should 21 .We were traveling down to Mexico for Thanksg

请教英语难题Recently,my husband and I had the opportunity to do something good for two people who were complete strangers to us.It made us feel so good to be able to do it that I thought I should 21 .We were traveling down to Mexico for Thanksg
请教英语难题
Recently,my husband and I had the opportunity to do something good for two people who were complete strangers to us.It made us feel so good to be able to do it that I thought I should 21 .We were traveling down to Mexico for Thanksgiving week with our family.22 we were sitting in the 23 first two seats in the first row of first class waiting for the plane to take off,I 24 heard one of the flight attendants(空乘) telling 25 that there was a couple sitting in the 26 of the plane who had just been married the previous day and were 27 off on their honeymoon.They had 28 their flight eight months in 29 but,owing to some schedule changes,had not been able to get 30 together,and no one else on the plane was 31 to move and the bride was in 32 .
I turned to my husband and told him what I heard.We 33 agreed and I called the flight attendant 34 to tell her that we’d be happy to give up our seats to this couple.The flight attendant seemed amazed and said “Really?Are you sure?” We said “Absolutely ”
So,we 35 to the back of the plane in separate seats.The flight attendants were extremely 36 and took good care of us even though we were no longer sitting in first 37 ,and we both made friends with the people sitting around us,who,as it 38 didn’t know why the young woman was crying or that they were newly married,and had a great flight.I had to go back to the front of the plane to 39 up a forgotten item at one point during the flight and 40 that the couple were sitting very close together,happily enjoying champagne.It really made my day and Thanksgiving week get off to such a wonderful start
22.A.Since B.After C.Before D.Though
请给出详细解析,THANKS……

请教英语难题Recently,my husband and I had the opportunity to do something good for two people who were complete strangers to us.It made us feel so good to be able to do it that I thought I should 21 .We were traveling down to Mexico for Thanksg
C.Before