Last night's TV news said that by then the death of the missing people __________ yet.
| A．had not been proved | B．had not proved |
| C．have not been proved | D．have not proved |
The new building will be built _____was a wasteland 30 years ago.
| A．in which | B．where | C．in what | D．there |
I’ve heard that the wood tower was built more than 1,000 years ago, so I think it is worthy ________．
| A．visiting | B．to visit | C．being visited | D．to be visited |
Attracting senior citizens, Florida ishome to the largest population of elder Americans．
| A．/; / | B．the; the | C．the; / | D．/ ; a |
--- -When did he get his first novel published?
---- It was in 2008 ____ he was still in high school.
| A．that | B．since | C．when | D．w hich |
Nobody can explain the mystery ____ he suddenly disappeared.
| A．why | B．what | C．whether | D．which |