It was at the very beginning ______ Mr Smith made a decision _____we should send for a doctor.

It was at the very beginning____ Mr. Smith made a decision ___we should send for a doctor．

A. what，that　　　B. that，which　　 C. which，that　 　D. that，that

It was at the very beginning ______ Mr Smith made a decision _____we should send for a doctor.

It was at the very beginning ______ Mr Smith made a decision _____we should send for a doctor.

1. A.
   when; which
2. B.
   that; which
3. C.
   when; that
4. D.
   that; that

 It was at the very beginning____ Mr. Smith made a decision ___we should send for a doctor．

A. what，that　　　B. that，which　　 C. which，that　 　D. that，that