Cleverness is not always a ________ of high grades in exams. You’d better learn knowledge carefully and practice more.
| A．result | B．record |
| C．guarantee | D．reaction |
_____ according to the instructions, the robot can behave like a human being with average IQ.
| A．When to operate | B．When operating |
| C．When to be operated | D．When operated |
The door _____ open, no matter how hard she pushes.
| A．doesn’t | B．can’t | C．won’t | D．shouldn’t |
When I first met Doris I didn’t like her, but I ______ my mind.
| A．have changed | B．change | C．had changed | D．would change |
An air crash accident happened to the plane, ______.
| A．nobody alive | B．nobody was alive | C．and nobody alive | D．where nobody alive |
I wondered what difficulty he had _____ the plan.
| A．to carry out | B．carrying out | C．carried out | D．with carrying out |