China sent up two manned spaceships and they were also great scientific _______ in the world.
| A．campaigns | B．surprises | C．achievements | D．discoveries |
No matter what substance it may be, it is ________ atom.
| A．resulted from | B．formed | C．made up of | D．made up with |
You should make good use of every _______minute to study
| A．precise | B．precious | C．previous | D．specific |
Smell the flowers before you go to sleep, and you may just______ sweet dreams.
| A．keep up with | B．put up with | C．end up with | D．catch up with |
It didn't take the children long to _______ the correct answer.
| A．make out | B．figure out | C．put out | D．take out |
Food supplies in the flood-stricken area ______. We must act immediately before there’s none left.
| A．have run out | B．are running out |
| C．have been run out | D．are being run out |