Question

-It’s surprising that he got such a high mark!
-Yes.I wonder      it．

1. A.
   how did he do
2. B.
   how he did
3. C.
   why did he do
4. D.
   that he did

Answer 1

B
考查宾语从句的用法。根据上句的意思：他得如此高分是很惊讶的。且答语中的Yes已经表明后者同意前面的观点，因此可以推测出：想知道的事情有可能是“怎样获得”，用疑问词how做连词；宾语从句用陈述语序，B项最合句意。