It is nice to do something for someone else out of the blue and not to expect anything ______.
| A．in relief | B．in return | C．in turn | D．in need |
Scientists say it may be five or ten years___________ it is possible to test this medicine on human patients.
| A．since | B．before | C．after | D．when |
My uncle___________ until he was forty-five.
| A．married | B．didn’t marry |
| C．was not marrying | D．would marry |
--What ____________when I phoned you?
----I_____________and began to have a bath.
| A．had you done; finished | B．were you doing; had just finished |
| C．did you do; had just finished | D．were you doing; was finishing |
Sometimes words alone were not enough to _________pupils along the path of knowledge
| A．provide | B．persuade | C．advise | D．cause |
Neither of them knew what was doing.
| A．other | B．others | C．the other | D．another |