_________ I could think of an answer, the teacher asked someone else.

We arranged to meet at the cinema at 7:30, but he failed to _________

ng you at about ten o’clock,but there was no reply Oh, that was probably ________ I was seeing the doctor

下列各项句子中“之”字意义与用法不相同的一组是（ ）

This factory has so far produced________ as last year[ ]