She’s not strong enough _________ walking up mountains.

A．to go             B．going             C．go               D．went

________ was strong enough to move the box．

1. A.
   No one of them
2. B.
   Not all of them
3. C.
   Nobody of them
4. D.
   None of them

He is not strong enough ________the box.

1. A.
   to carry
2. B.
   carrying
3. C.
   carry
4. D.
   carries