We must apply what we have learned to our daily work because in no case _____ from practice.
| A．should theory separate | B．should theory be separated |
| C．theory should separate | D．theory should be separated |
I will mark ______ everything you say.It is helpful to the English learners.
| A．up | B．down | C．out | D．off |
—Believe me，all your efforts will ______ some day.
—Thanks for your encouragement.
| A．pay back | B．pay down | C．pay off | D．pay for |
Some blood types are quite common，others are regionally______，and still others are rare everywhere.
| A．distributed | B．contributed | C．obtained | D．convinced |
Don't be ______ by products promising to make you lose weight quickly.
| A．taken off | B．taken out | C．taken away | D．taken in |
You have done so much work—you ______ pass the exam.
| A．are likely to | B．have to | C．can | D．are bound to |