24．The teacher together with the students ________ discussing Reading Skills that _______ newly published in America.

 There _____a book and two pencils on the desk.

______ without friends ______ the most difficult challenge for Chuck while living on the island.

 In our school there ______ a number of books on science and the number of them ______ growing larger and larger.

 --What’s this in English?---_____ a bike.