It is these poisonous products _____ can cause the symptoms of the flu, such as headaches and aching muscles.
| A．who | B．that | C．how | D．what |
Having devoted his life to the realization of racial equality，former South African President Nelson Mandela＿＿＿on December S，2013．
| A．passed away | B．had passed away | C．has passed away | D．passes away |
After living in Quanzhou for five years，she has developed quite an＿＿for the city．
| A．association | B．affection | C．appointment | D．encouragement |
It has been announced that the 2014 World Cup＿＿＿＿＿in Brazil from June 12一July 13，2014，in 12 hosting cities．
| A．will stage | B．has staged | C．will be staged | D．is staged |
It’s still not clear＿＿＿＿＿the two countries can reach an agreement at the conference．
| A．what | B．which | C．whether | D．that |
By the end of September 2013，＿＿＿＿．number of netizens in China has hit ＿＿＿record high of 604 million．
| A．the；the | B．a；a | C．a；the | D．the；a |