Our success depends ______ everyone works hard or not.
| A．upon whether | B．on that |
| C．in which | D．on why |
Fred entered without knocking and, very out of breath, sank _______ a chair.
| A．on | B．off | C．into | D．to |
The open-air celebration has been put off _______ the bad weather.
| A．in case of | B．in spite of | C．instead of | D．because of |
Many of them turn a deaf ear to his advice, _____ they knew it to be valuable.
| A．as if | B．now that | C．even though | D．so that |
I’d like to study law at university __________ my cousin prefers geography.
| A．though | B．as | C．while | D．for |
Some students often listen to music _____ classes to refresh themselves.
| A．between | B．among | C．over | D．during |