35．A．invent              B．inventing             C．invented                D．to invent

34．A．simple             B．simpler              C．simplest           D．more simple

33．I'm afraid that no one knows _________．

A．when will the game start                   B．where has our teacher gone

C．who will win the game                     D．how long did the meeting last

The bicycle is one of the   34   yet most useful inventions in the world．The surprising thing is that it was not   35   earlier, although the great inventor Leonardo da Vinci（达芬奇） had drawn pictures for bicycles and also for flying machines and some other things．Those things were not produced   36   long after he died．

A person riding a bicycle uses   37   energy（能源）to make the bicycle move, and there is no pollution at all when you are riding．Even so, in developed   38  , most people don't travel to work by bicycle．It is not because the bicycles are expensive or people feel   39   if they ride to work．It's because   40   cars on the roads becomes larger．It certainly becomes   41   to ride a bicycle． As a result, more people put their bicycles away and go to work   42   their cars and, in this way, the situation（情形）is made worse．  43   the best way to make riding safer and more popular is to build roads only for bicycles, and to make   44   so difficult and expensive     45   drivers to take their cars into the city that they will go back to using their bicycles．

32．Miss Green is the only person _________ can help you with your English．

A．she                B．whom                  C．which                D．who

31．--How many students are there in your newly built school?

--Two thousand in _________ classrooms．

A．four                B．fourth                  C．forty            D．the fortieth

30．Tom and Linda are _________ from Australia．

A．students             B．girls                 C．boys                  D．sisters

29．--Can you tell me _________ it is from here to downtown?

--Yes, it's fifteen minutes by bus．

A．how much           B．how long               C．how far                D．how soon

28．--Father's Day is coming．I'm going back home to see my father．

--_________．

A．It's very kind of you                       B．Give my best wishes to him

C．Say goodbye to him, please                 D．See you soon

27．--Look! The man at the gate _________ be our headmaster．He is always standing there every morning．

--No, it _________ be him．He is holding a meeting in the office now．

A．must; can't                              B．must; mustn't

C．can; can't                               D．can; mustn't

26．This is _________ used car． It's much _________ than a new one．

A．an; cheaper                             B．an; dearer

C．a; cheaper                              D．a; dearer