The South Pole isn’t _____ people could find a comfortable place to live, for the average winter temperature there is below-40℃.
| A．which | B．that | C．what | D．where |
_____ is a fact that English is being accepted as an international language.
| A．There | B．This | C．That | D．It |
--Your effort is sure to pay __________
---Thank you for your encouragement.
| A．off | B．for | C．back | D．down |
“Would you take this along to the office for me?” “_________.”
| A．That’s right | B．With pleasure | C．Never mind | D．Not at all |
While he was investigating ways to improve the telescope, Newton made ________ discovery which completely changed ________ man’s understanding of color.
| A．a; 不填 | B．a; the | C．不填; the | D．the; a |
It is reported that the police will soon ________ the case of the two missing children.
| A．look upon | B．look after | C．look into | D．look out |