---- Was the driving pleasant when you vacationed in Mexico last summer?

       ---- No, it ________ for four days when we arrived, so the roads were very muddy．

       A．was running                                   B．had been raining   

       C．would be raining                              D．has rained

 Have you ever wondered ______ there are so many natural disasters across the world in 2010?

       A．which it is that                                                      B．what is it that

       C．how it is that                            D．why it is that

 ，I have to put it away and focus my attention on study this week．

       A．However the novel is amusing              B．No matter amusing the story is

       C．However amusing the story is               D．No matter how the story is amusing

 You should have informed me that the lecture was put off．I ________ all the way here through the heavy rain．

       A．needn’t have run                                B．can’t have run

       C．shouldn’t have run                             D．mustn’t have run

 The World Expo 2010 is being held at a time        the world is looking for a new kind of balance between nature and cities．

       A．which                B．where                 C．when                 D．that

 It is required that the football match___________put off ________ the bad weather．

       A．be; thanks to                                   B．be; due to   

      C．was; thanks to                               D．was; owing to

 The museum he paid a visit ________ at the end of the street．

       A．stand                                         B．stands     

      C．to stand                                    D．to stands

 The big snow caused great ________ to the people living in the south of China, ________ some of them homeless．

       A．destroy; left                                      B．damage; leaving

       C．ruin; having left                                  D．wound; leaving

 Little Bob is often educated by his parents to be good and friendly to anybody even if ________．

       A．attacking       B．is attacked        C．to be attacked     D．attacked

 Not until then _____ their marriage was breaking up because they had little in common．

       A．did I realize         B．I realized       C．had I realize      D．has I realized