Mary is ________ only girl who has been to American．

A．a

B．the

C．an

D．/

China is one of ________ oldest countries in ________ world．

A．the; the

B．the;/

C．a; a

D．an; the

He has tried twice, and the captain asks him to have ________ third try．

A．the

B．a

C．another

D．other

A boy named Ding Wei kicked a goal early ________ of the match．

A．in the one half

B．in the first half

C．for the first half

D．for half one

Mr White lives on ________ floor．

A．the fifteen

B．fifteen

C．the fifteenth

D．fifteenth

________ girl in ________ Grade Three is ________ tallest in our school．

A．The; the; the

B．A; a; a

C．The;/; the

D．A;/; a

English is ________ interesting subject for most of students．

A．the; an

B．the; the

C．an;/

D．an; the

________ book is very useful．I bought it from ________ unknown little town．

A．A; a

B．The; a

C．A; an

D．The; an

I’m busy ________．

A．at the moment

B．at that moment

C．in a moment

D．just a moment

－Whose room is that?－It’s ________．

A．the twins’

B．of Lucy and Lily

C．of the twins

D．the twins