问题补充:
单选题Ithasbeen4years_____theearthquakehappenedinWenchuanA.whenB.sinceC.afterD.while
答案:
B解析本题为固定搭配:It have/has been +一段时间+since +一般过去时。故选B
时间:2022-11-06 16:36:39
单选题Ithasbeen4years_____theearthquakehappenedinWenchuanA.whenB.sinceC.afterD.while
B解析本题为固定搭配:It have/has been +一段时间+since +一般过去时。故选B