According to the driver’s explanation, it was not his carelessness but the bad road conditions that _________ for the accident.

The 2010 World Cup will be held in South Africa，and no one canwhich country will be the champion．

To understand the complex situation completely requires more thought than ________ so far

(2013·河北普通高中高三质量监测)Many people tried to leave the country, ________ there was much violence and a serious shortage of food supply.

Linging, could you give me _____ advice on learning Chinese grammar