用所给的词组适当填空,be from,look at,be happy ,how old,short and silm

用所给的词组适当填空,be from,look at,be happy ,how old,short and silm
1.( )this.It is a map of China.2.( )Peter and Nike （ ）America?
3.It is （） .4.( )is your mother It is a secret.
5.Sally is my new friend.She is （ ）