----She must have gone back to the valley.

   ----No, she _____. The entrance to it was nowhere to be found.

   A mustn’t     B needn’t   C couldn’t   D hadn’t

--She must have gone back to the valley.

--No, she _______. The entrance to it was nowhere to be found.

1. A.
   mustn't
2. B.
   needn't
3. C.
   couldn't
4. D.
   hadn't

---She must have gone back to the valley. 
---No, she______. The entrance to it was nowhere to be found.

1. A.
   mustn’t
2. B.
   needn’t
3. C.
   couldn’t
4. D.
   may not

.

—She must have gone back to the valley. 

 —No, she_________. The entrance to it was nowhere to be found.

  A. mustn’t  B. needn’t   C. couldn’t  D. may not

--- She must have gone back to the valley.

--- No, she ___. The entrance to it was nowhere to be found.

A. mustn’t                  B. needn’t              C. couldn’t            D. hadn’t