The ability _________ an idea is as important as the idea itself.
| A．expressing | B．expressed | C．to express | D．to be expressed |
Someone called me up in the middle of the night,but they hung up ________I could answer the phone.
| A．as | B．since | C．before | D．until |
We offered him our congratulations ________his passing the college entrance exams.
| A．at | B．on | C．for | D．of |
The doctor will be free ________.
| A．10 minutes later | B．after 10 minutes |
| C．in 10 minutes | D．10 minutes after |
The train leaves at 6:00 p.m.So I have to be at the station ________5:40 p.m.at the latest.
| A．until | B．after | C．by | D．around |
I must thank my parents ________to be a college student.
| A．to make it possible for me | B．to make it possible to me |
| C．for making it possible for me | D．for making it possible to me |