30．I'm too tired and I can't keep _______．

A．work                B．worked              C．working               D．works

29．It _______ me twelve hours to get there by train．

A．took                  B．spent                 C．cost                   D．paid

28．In 2008, the Olympic Games _______ in Beijing．

A．is held               B．ate held              C．will hold            D．will be held

27．If it _______ tomorrow, I won't go out．

A．snow                B．snows                  C．snowed               D．will snow

26．There's coffee and tea．You can have _______ of them．

A．all                 B．every                  C．other                   D．either

25．The weather in ShijiaZhuang is hotter than _______ in my hometown．

A．that                 B．this                  C．it                           D．one

24．_______ a cold morning, I opened the door and was happy to find that it was snowing outside．

A．By              B．In                C．At              D．On

23．“Help _______ to the fish，children，”said the mother．

A．yourself            B．yourselves          C．myself                 D．ourselves

22．_______ bad weather! We've never had _______ rainy day．

A．What a，such                                         B．How，such a

C．What，such a                                            D．What，so a

21．_______ exercise you take，_______ you will be．

A．The more，the weaker                             B．The more，the healthier

C．The less，the healthier                               D．The much，the healthy