Nowadays, scientists are working hard to find a best way of treating addictions __________ drugs.
| A．of | B．in | C．on | D．to |
Guangdong lies＿＿＿the south of China and Fujian is＿＿＿the east of it. Hainan is＿＿the coast of the
mainland.
| A．in； in； on | B．in； on； off |
| C．on； to； on | D．in； to； away |
We offered him our congratulations＿＿＿＿＿his passing the college entrance exams.
| A．at | B．on | C．for | D．of |
The train leaves＿＿＿6：00 pm, so I have to be at the station＿＿＿5：40 pm at the latest?
| A．at； until | B．for； after | C．at； by | D．before； around |
It was not until then that I came to know that knowledge ___ only form practice.
| A．had come | B．has come | C．came | D．comes |
He ___ speak on TV tonight.
| A．was to | B．is to | C．will be | D．has |