________ England of those years was _______ England in peace.
| A.不填, 不填 | B.The, an | C.The, 不填 | D.不填, an | 
The people, _______ had been damaged by the flood, were given help by the Red Cross.
| A.all their homes | B.all whose homes | 
| C.all of their homes | D.all of whose homes | 
This is a simple idea, but that is hard to put into practice.
| A.one | B.it | C.that | D.those | 
– Who is the man standing there?
 – If you know, his name is Mike.
| A.must | B.can | C.may | D.would | 
One solution to this problem now is sustainable development.
| A.discussed | B.discussing | 
| C.to be discussed | D.being discussed | 
Wind power units are placed ______ there is a lot of wind.
| A.where | B.when | C.which | D.that |