From facts, scientists have_______ that more energy is being absorbed from the sun, throwing the earth’s energy “out of balance”.
| A．confirmed | B．concluded | C．concentrated | D．centered |
______ the agreement was reached without conflict.
| A．Happy | B．Happily | C．Unhappy | D．Unhappily |
Jack liked the milk so much that he had it ____to his house every week.
| A．deliver | B．to deliver | C．delivered | D．delivering |
The young man，who by then ___ admission to university，decided to do some part-time jobs to gain more practical experience．
| A．gained | B．was gaining | C．has gained | D．had gained |
We could hardly believe what she says because she is____ ____changing her mind.
| A．regularly | B．steadily | C．eventually | D．constantly |
—When can I use your computer?
—Never! ________should you touch it.
| A．At no time | B．At some time | C．At any time | D．At one time |