Ⅰ、1、umbrella
2、hungry
3、duck
4、bird
5、expensive
Ⅱ、6、buildings
7、walking
8、activities
9、to go
10、to bring
Ⅲ、11-15:C B B A B
16-20:C A B C A
Ⅳ、21、How is
22、took bikes
23、didn't have
24、What is,like
25、hate
V、26、find out
27、too much,to do
28、wonder,life was like
29、Who,go on,with
30、waited a long time