The woman sold the eggs ________ seven dollars and they were sold ________ half price.
| A．with, at | B．for, at |
| C．at, in | D．by, on |
—Who do you think will get the first prize? —Mary, of course. She ________ for the competition for months.
| A．is preparing | B．was preparing |
C．has been preparing | D．had been preparing |
All his time _______research on Chinese history, he has no time for outdoor activities.
| A．devoted to do | B．devoted to doing |
C．devoting to doing | D．is devoted to doing |
—How long do you think it will be _______ we get the loan?—Perhaps two or three months.
| A．until | B．before | C．when | D．that |
Hardly had she heard the sad news that her son lost her job when she_____crying.
| A．burst into | B．set out | C．burst out | D．set about |
Everything comes with____price; there is no such____thing as a free lunch in the world
| A．a, a | B．a,/ | C．the, a | D．the,/ |