By careful observation and precise calculation, Nicolaus Copernicus _____ that there is no one center in the universe and the sun is the center of the solar system.
| A．believed | B．thought | C．concluded | D．imagined |
He called another girl, ______ was more suitable for the position.
| A．he believed | B．who he believed | C．he believed she | D．whom he believed |
After he had played on the football field one game daily for a week, his strength seemed to have ______.
| A．put out | B．got out | C．gone out | D．run out |
Our success was largely_____ the good cooperation of all team members.
| A．because | B．result from | C．due to | D．thanks to |
Underground railway is being built in Shenyang. We are sure to take the subway to ______ in the city in no time.
| A．get through | B．get around | C．get together | D．get over |
We are making progress every day in computer science and some of the techniques are ______ very soon.
| A．on the way out | B．in the way out | C．by the way to | D．on the way towards |