30. _____in a science competition, the three students were awarded scholarships totaling
$ 21, 000.
| A．To be judged the best | B．Judged the best |
| C．Having judged the best | D．Judging the best |
—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 |
I really don’t know______Tom lost his wallet.
A.when was it that B that it was when
C. where it was that D. it was where that
Our class adviser doesn’t doubt，in any case.___.we can overcome the difficulties in our study.Healways gives us a confident smile.
| A．how | B．whether | C．that | D．why |
It was never clear _______ the man hadn’t reported the accident sooner.
| A．that | B．how | C．when | D．why |
Barbara Jones offers to her fans is honesty and hapiness.
| A．Which | B．What | C．That | D．Whom |