--- David. Why are you still here? They are ready to start.--- Sorry, but I when to leave.
Whatever you do, ________ is difficult if you put your heart into it.
My English teacher had a trip to the USA last summer. Which picture did she take there?
_______ a big party in our school in two weeks.
Every year lots of trees _______ to make our country more beautiful.
--Listen! Is it Linda singing in the next room? --No, it __________ be her. She is still in Shanghai.