8.Customers are asked to make sure that they ____ the right change before leaving the shop.
| A．will give | B．have been given |
| C．have given | D．will be given |
After months of voyage, Columbus arrived in ______ later proved a new continent．
| A．where | B．what | C．which | D．that |
The idea has been widely accepted______Beijing Opera should be added to the basic education in China.
| A．which | B．when | C．that | D．/ |
I have no doubt that he will pass the exam, but I still think there is something about _____ he has really got everything ready.
| A．that | B．whether | C．how | D．Why |
_____ puzzles me most is that I don’t know ______ the difference between the two lies.
| A．What, how | B．What, where | C．That, what | D．How, which |
_____ puzzles me most is that I don’t know ______ the difference between the two lies.
| A．What, how | B．What, where | C．That, what | D．How, which |