听一听，选一选。
(1)It’s a postcard    my cousin.
A. in      B. from     C. by
(2) He lives    the US.
A. in      B. from     C. with
(3) I’m   holiday in New York.
A. in      B. on     C. to
(4) I walked    my sister yesterday.
A. by      B. from     C. with
(5) We ‘re going    have a picnic.
A. at      B.不填    C. to
(6)Did he travel    plane
A. by      B. with     C. on