All of the Plants now raised on farms have been developed from plants __ wild.
| A．once they grow | B．they grew once | C．that once grew | D．once grew |
.Since Spring is here, you can ______ these fur coats till you need them again next winter.
| A．put on | B．put away |
| C．put down | D．put off |
Was ______ Alice, ______ played the piano very well, ______ helped me with my English?
| A．it;whom;that | B．this;who;who |
| C．it;that;that | D．it;who;that |
There are 55 students in Class 5, _______ failed in the test.
| A．all of which | B．all of them |
| C．none of whom | D．none of them |
.I would rather buy a house in the countryside than ______ in the city.
| A．it | B．one | C．this | D．that |
Cao Cao’s tomb is reported ______ in China, which attracts nationwide attention.
| A．being found | B．to be found |
| C．having been found | D．to have been found |