30．Some children want to challenge themselves by learning a language different from____spoken by their parents at home．
| A．what | B．that | C．which | D．one |
Before a problem can be solved，it must be obvious____the problem itself is.
| A．what | B．that | C．which | D．why |
The policy of the mainland is very clear and straightforward，and the key problem is_____the leaders of Taiwan will accept it.
| A．that | B．how | C．why | D．whether |
The shocking news made me realizeterrible problems we would face.
| A．what | B．how | C．that | D．why |
We’ve offered her the job, but I don’t know______ she’ll accept it.
| A．where | B．what | C．whether | D．which |
I hope we’ve got it takes to make our love last—if anything is real, the heart will make it plain.
Athat Bwhat Cwhen Dwhether