Asked suddenly about the matter ,he couldn’t an answer at once.
| A．come up with | B．look for | C．put up with | D．answer for |
It is difficult for us to learn a lesson in life ______ we’ve actually had that lesson.
| A． until | B．after | C．since | D．when |
______ earlier online survey shows that ______ quantity of Chinese believe Yuan Longping deserves a Nobel Peace Prize for his contribution to fighting world hunger.
| A．The; the | B．The; a | C．An; / | D．An; the |
Until the start of the Industrial Revolution, mankind was poor, hungry, and constantly at the _______ of disease and natural disasters.
| A．power | B．limit | C．control | D．mercy |
The food ran out early, but __________ the party was a success according to the guests present that evening.
| A．therefore | B．meanwhile | C．otherwise | D．however |
A new survey released by Yale University finds that Americans trust scientists most when ______ comes to information on climate change.
| A．that | B．it | C．this | D．there |