1.B 在情况基本恢复正常之后,我们也要关心地震受灾地区的孩子。
2.D 过了大概十分钟,老师把问题的正确答案给了学生们。
这两题都是what引导宾语从句,做介词after的宾语。在宾语从句中,what充当主语。what引导名词性从句,很多时候没有确定或者具体的意义,翻译的时候只能意译。
试比较:She was educated at Beijing University, after which she went on to have her advanced study abroad. 此句中which指代前边整件事情,在从句中which充当after的宾语,after which构成从句的时间状语。
d c
都是从句的连接词,一般在介词后都用which