Sam some knowledge of the computer just by watching others working on it．
| A．brought up | B．looked up | C．picked up | D．set up |
_____ surprised me most was______ they had finished the so quickly.
| A．What; what | B．That; that | C．That; what | D．What; that |
____ seems strange to us is ______ she can sing so many English songs beautifully.
| A．It; that | B．That; how | C．It; Why | D．What; that |
My parents used _____ they had to get a new car for my brother.
| A．what | B．which | C．all what | D．不填 |
The question came up at the meeting _____ we had not enough money to do the research.
| A．whether | B．if | C．that | D．what |
Is this hotel _____ you said we were to stay in your letter?
| A．where | B．which | C．in that | D．in which |