Choose the best answer from A、B or C according to the meaning of the sentence.
( )21. There is big supermarket in center of our city.
A. a; the B. the; a C. the; the
( )22. All the visitors live on floor.
A. two B. second C. the second
( )23. This is my twin sister, Lucy. Not only she but also I good at drawing.
A. is B. am C. are
( )24. Welcome to my new house, Ann and John! Help to some fruit.
A. myself B. yourself C. yourselves
( )25. Jack likes reading a newspaper he is having breakfast.
A. while B. and C. because
( )26. We have been in China three years. We like it very much.
A. in B. since C. for
( )27. Li Kai jumped in the long jump. He won the game.
A. longest B. farthest C. highest
( )28. exercising, and you’ll be healthier.
A. Keep B. To keep C. Keeping