975.Have you finished the book?
No,I've read up to _______ the children discover the secret cave.
A.which
B.what
C.that
D.where
976.It never occurred to me _____ you could succeed in persuading him to change his mind.
A.which
B.what
C.that
D.if
975.答案是D;up to为介词短语，后接宾语从句。
976.答案是C;考查固定句型：It occurs/occurred to sb.that…某人突然想起…
