The water supply has been cut off temporarily because the workers________one of the main pipes. (2013·天津，13)
| A．had repaired | B．have repaired |
| C．repaired | D．are repairing |
The experience of the Chinese nation attests to a truth____ a nation loses in times of disaster will be made up for by her progress
| A．that what | B．what | C．that | D．what that |
In his speech, Premier Wen Jiabao points out that creativity is __it takes to keep a nation highly competitive .
| A．how | B．what | C．which | D．that |
The book is meant to ___needs it .
| A．who | B．whoever | C．whomever | D．whom |
The couple are spending their holiday on __is described as one of the most beautiful islands .
| A．that | B．what | C．which | D．where |
See the flag on top of the building ? That was ___ we did this morning .
A when B. which C. where D. what