postage stamp

(a)  

postcard

(a)  

envelope

(a)  

parents

(a)  

brothers and sisters

(a)  

foreign student

(a)  

in total

(a)  

how many

(a)  

apple

(a)  

mandarin orange

(a)  

sandwich

(a)  

ice cream

(a)  

my elder sister

(a)  

class

(a)