When people talk about the cities of China, the first ____comes into their mind is Beijing．
| A．which | B．one | C．that | D．of them |
91. She likes to keep things rather than throw them ____ .
| A．out | B．off | C．down | D．Away |
90. ____ the work was very difficult, they managed to finish it in time.
| A．Because | B．Though | C．Therefore | D．But |
89. The task is hard, ____, the workers managed to finish it in time.
| A．therefore | B．otherwise | C．however | D．Yet |
88. My old school friend comes to see me now and then. The underlined part means ____.
| A．seldom | B．sometimes | C．once a year | D．Never |
87. Terry was so tired that he couldn’t walk ________.
| A．straight | B．straightly | C．steady | D．Direct |