Question

Mr．Green didn’t understand ________ made his daughter so absent-minded this morning．

1. A.
   how that was
2. B.
   what was it
3. C.
   why it was that
4. D.
   what it was that

Answer 1

D

这题考查的是强调句的特殊疑问句做宾语从句的用法，因为强调的是从句的主语，所以疑问词用what，而且宾语从句的语序是陈述句。选D。