Is it that you often play computer games ________ worries your parents?
| A．why | B．that |
| C．which | D．what |
_____ the hotel for the Ice and Snow Festival in Harbin has already begun.
| A．Booked | B．Booking | C．Bought | D．Buying |
We believe that _____ 2008 Beijing Olympic Games were _____ success.
| A．\ ; a | B．the ; \ | C．the ; a | D．a ; a |
The expert’s theory, _____ my opinions were based, proved right in the end.
| A．on which | B．whom | C．for which | D．that |
______ difficulties we may face in our life, we should keep calm and take measures to get them over.
| A．Whenever | B．Whatever | C．Whichever | D．However |
This kind of tree is widely ______ in our country.
| A．divided | B．constructed | C．distributed | D．separated |