You may not understand what they have done, because they ____ a younger generation.

A．belong to           B．are belonged to        C．are belonging to       D．will be belonged to

You may not understand what they have done, because they ____ a younger generation.

You may not understand what they have done, because they ____ a younger generation.

You may not understand what they have done, because they ________ a younger generation．

1. A.
   belong to
2. B.
   are belonged to
3. C.
   are belonging to
4. D.
   will be belonged to