The key _____ four modernizations lies _____ the science and education.
| A．to, on | B．of, on | C．to, in | D．of, in |
When the elevator doors open, stand aside and let everyone out ________ you try to get in.
| A．unless | B．although | C．until | D．before |
________ an important decision more on emotion than on reason, you will regret it sooner or later.
| A．Based | B．Basing | C．Base | D．To base |
_______ details of this job, please contact our manager Mr. Smith at 8765323.
| A．For | B．In | C．With | D．On |
— I phoned you at 7 yesterday evening but nobody answered.
— Oh, I _______my dog in the park then.
| A．walked | B．was walking | C．had walked | D．would walk |
Will was lying on the grass, _______the sky thick with stars.
| A．his eyes fixing on | B．fixed his eyes on |
| C．his eyes were fixed on | D．his eyes fixed on |