根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意义连贯、完整。(共5小题，计l0分)
A: Do you know the earthquake in China not long ago?
B :    . But I only know a little about the earthquake.
A: Many people died and got hurt in the earthquake.
B :   . Where did it happen?
A : It happened in Ya' an, Sichuan Province.
B:    ?
A: It happened on April 20th ,2013.
B:    .
A: We should try our best to help them.
B:   .