John has tried many ways to solve the physics problems, but _______ works.
| A．neither | B．no one | C．none | D．nothing |
The government have realized the use the returnees make ______ the experience and skills ________while living abroad.
| A．of; gained | B．of; gain | C．for; gained | D．up; gain |
Food aid______ is not enough to ______ the problem _______ now.
| A．only; solve; discussed | B．alone; solving; being discussed |
| C．merely; solving; being discussed | D．alone; solve; being discussed |
People ran out __________ as fire tore through the building.
| A．with vain | B．in rags | C．with one voice | D．in terror |
Some students ____________admitting they were ______ computer games.
| A．resisted; hooked on | B．accepted; addicted to |
| C．distributed; involved in | D．refused; devoted to |
The old man has a son and two daughters, ______ treating him well, ______ makes him sad.
| A．none of them; which | B．and none of whom; that |
| C．none of whom; which | D．and none of them; that |