为什么A serious flood happened in China in 1998.用happen?而When d

为什么A serious flood happened in China in 1998.用happen?而When d In some provinces in _ southern China,serious flood breaks o a serious flood___in China in 1998 1998 happen in the flood.意思 see changes that have happened in that area中为什么用happen不用take a result of the serious flood,two-thirds of the buildings in 英语缺词填空A flood happens in many ways.They may happen because o What may happen when there is a flood? Air pollution is now a serious problem in China 英译汉 After the serious earthquake happened in April,2011 in Japan ____things happened in china last year. What happened in that class probably reflects what is happen