21. Historically,        main material for making tables has been wood, but         metal and stone have also been used.
A.the; the               B.the; /                   C./; the                   D./ ; /
22. --- Have Max and Tina sold out all of the English dictionaries? 
--- Yes, completely.         is left.
A.None                  B.Nothing               C.Go ahead             D.Neither 
23.         , the song is very popular.
A.Sounded beautifully                              B.Sounding beautifully 
C.Sounded beautiful                                D.Sounding beautiful 
24.        ,sign in www. sohunt. com,      you might download all you need.you lose the paper document
A.If;which        B.So long as;what    C.In case;where                   D.Even if;as