As is known to us all, _____ tiger is in _____ danger of becoming extinct.
| A．the, a | B．the, 不填 |
| C．a, 不填 | D．不填, the |
It's good to know________the dogs will be well cared for while we're away.
| A．what | B．whose | C．which | D．that |
________ one of you breaks the window will have to pay for it.
| A．Whoever | B．Whatever |
| C．Whichever | D．Wherever |
Do not let any failures discourage you, for you can never tell______close you may be to victory.
| A．how | B．that | C．which | D．where |
________makes the book so extraordinary is the creative imagination of the writer.
| A．That | B．What | C．Who | D．Which |
—The patient looks much better.________ is it that has made him ________ he is today?
—Perhaps the special medicine and his family's patient care.
| A．What；that | B．That；that |
| C．What；what | D．What；which |