It was three weeks later ____ I knew I had made a mistake.（ ）
- A.where
- B.that
- C.before
- D.when
正确答案及解析
正确答案
B
解析
如果把it was去掉，此句为Three weeks later I knew I had made a mistake.句子仍然成立，所以该句为it is…that…强调句。句意为：三周后我才知道自己犯了个错。
It was three weeks later ____ I knew I had made a mistake.（ ）
如果把it was去掉，此句为Three weeks later I knew I had made a mistake.句子仍然成立，所以该句为it is…that…强调句。句意为：三周后我才知道自己犯了个错。
