已知a-b=2，b-c=-3，c-d=5，求代数式（a-c）（b-d）÷（a-d）的值。

小题1:At last, she _____________she was lost(意识到).

小题2:They all shouted with___________________(激动).

小题3:The old soldier often tell us his _____(经历) in the past.

小题4:Riding a bike has more _____ (优势) than driving a car because of the heavy traffic.

小题5:My father _____ (放松) himself at the weekend.

小题6:They are _____ to see each other .(please)

小题7:Eating ______ is good for us. We must eat more vegetables. (health)

小题8:Look at her ______ (color) face. She must be badly ill.

小题9:We are celebrating my parents’ 20 years of _________________(marry)

小题10:His father’s ______ made them feel sad.(die)