--Do you know ______ the soldiers came to Yushu Town?

   --The roads were badly broken. They had to walk there.

A．why                  B．when                  C．how                 D．where

--Do you know ______ the soldiers came to Yushu Town?

   --The roads were badly broken. They had to walk there.

A．why                  B．when                  C．how                 D．where

---Do you know __________ the soldiers came to Yushu Town?

---The roads were badly broken. They had to walk there.

1. A.
   why
2. B.
   when
3. C.
   how
4. D.
   where

--Do you know ______ the soldiers came to Yushu Town?

--The roads were badly broken. They had to walk there.

A．why                B．when                C．how           D．where

--Do you know ______ the soldiers came to Yushu Town?
--The roads were badly broken. They had to walk there.

A: Do you know __________ the soldiers came to Yushu Town?
B: The roads were badly broken. They had to walk there

1. A.
   why
2. B.
   when
3. C.
   how
4. D.
   where