选择正确的答句。
( )— What ________ he do? — He ________ pears on the farm.
( ) Look! Lucy is ________ a new red dress. She is beautiful today.
( )—Whose dresses are these? —They’re the__________.
( ) —When is your birthday? —It’s__________
( )—I usually go there by train. —Why not__________ by boat for a change?