35．Air pollution, together with littering,_____ many problems in our large industrial cities today．

　　　 A．causes　　　　　 B．cause　　 　　　　 C．caused　　　 　　　 D．causing

34．While studying, fix your mind on what is really important, or you will ______ remembering nothing．

　　　 A．end up　　　　　 　　　　　　　　　　　　　　　 B．take up　　 　　　　 C．bring up　　 　　 D．show up

33．If you are looking for a fully-furnished room to rent, I think there's a(n)______ apartment in my building．

　　　 A．empty　　　　　 B．bare　　　 　　　　 C．free　　　 　　　　　 D．vacant

32．I'll have all of the readings ______ by the end of this term if my plan goes well．

　　　 A．completing　　　　　　　 　　　　　　　　 B．to complete

　　　 C．completed　　　　　　　　　 　　　　　 D．being completed

31．-Mr．Priestly has just accepted our offer over the phone．

　　　 -Good, but you must ask him to ______ it in writing．

　　　 A．consume　　　　 B．confirm　　 　　　 C．consult　　　　 　 D．conduct

30．-Tom is very upset．I wish I ______ him the disappointing news．

　　　 -I told you not to, but you wouldn't listen．

　　　 A．didn't tell　　 　　　 B．hadn't told　　 　 C．haven't told　　 　 D．wouldn't tell

29．Education is　　　　　 remains when we have forgotten all we have been taught．

　　　 A．whether　　　　 B．how　　　　 　　 C．that　　 　　　　　　　 D．what