Question

Is it on the morning of Christmas _ the thief was caught?A when B that C before D as

Answer 1

Is it on the morning of Christmas _ the thief was caught?A when B that C before D as
选B
该题为一句强调句，强调部分是on the morning of Christmas 这一时间状语
强调句只能用that引导的，所以只能选B
判断强调句的标准为将is it that 去掉，原句仍然完整
有不会的可以再问我

Answer 2

B强调句（因为将is it that 去掉，原句依然成立，所以可以判断为强调句）

Answer 3

选B.强调句型。