In the experiment we kept a watchful eye ________ the developments and recorded every detail.
A.in | B.at |
C.for | D.on |
______ apple fell from the tree and hit him on ______ head.()
A. | An; the | B. | The; the | C. | An; 不填 | D. | The; 不填 |
Are you all right?
A. | That's OK | B. | I think so | C. | Take it easy | D. | It's very kind of you |
The terrible accident almost_____ the driver his life.
A.valued | B.counted | C.took | D.cost |
Once out of the earth’s gravity, the astronaut is____by the problem of weightlessness.
A.affected | B.effected | C.related | D.offered |
The beauty of the place ______ them to pause in their hike and rest a while.
A.allowed | B.switched | C.invited | D.addicted |