_____I always felt I would pass the exam, I never thought I would get an A.
A.While B.Once C. If D. Until
There are some health problems that , when _______ in time , can become bigger ones later on.
| A．not treated | B．not having treated |
| C．not to be treated | D．not having been treated |
You will be surprised how quickly you _____ the money , so it is worthwhile to make a plan in advance.
| A．put away | B．get through | C．run out | D．end up |
---How much does this store often _______ for such large eggs ?
--- Only $ 65 US cents a dozen . It was a real bargain.
| A．demand | B．cost | C．pay | D．charge |
If the project ________ by the end of this month is delayed , the company is sure to pay a large sum of money for it .
| A．completed | B．completing |
| C．to be completed | D．having completed |
________ astronauts cannot go to a baseball game or a movie in orbit , there are many familiar activities that they can still enjoy.
| A．While | B．Since | C．Before | D．Unless |