____ volcanoes now for many years, I am still amazed at their beauty as well as their potential to cause great damage.
| A．Studied | B．To study | C．Having studied | D．Studying |
— I haven’t got the reference book yet, but I’ll have a test on the subject next month.
— Don’t worry. You ________ have it by Friday.
| A．could | B．shall | C．may | D．must |
To________ telling lies, he asked his friend to help him cheat his parents.
| A．get rid of | B．get away with | C．throw away | D．get down to |
Which food is called ________ food, milk, sugar or beans?
| A．energy-given | B．body-building | C．energetic | D．protection |
After ______silence of several minutes, he came towards her and said, “I have struggled with my feelings , but without ______success!”
| A．a; the | B．the; a | C．不填; a | D．a; 不填 |
The future of developing countries__________ the hands of children, which is __________education and training for young people is important.
| A．lies in/why | B．is put/ because | C．is laid/ the reason | D．depends on/why |