1.  ---I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice.

--- Oh, it ____ my uncle. He was in my room then.

A. must have been   B. should have been   C. must be   D. should be

---I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice.
--- Oh, it ____ my uncle. He was in my room then

1. A.
   must have been
2. B.
   should have been
3. C.
   must be
4. D.
   should be

9．  --I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice.

   --Oh，it____ my uncle. He was in my room then.

     A． should have been   B． should be      C． must have bee       D． must be

---I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice.

--- Oh, it ____ my uncle. He was in my room then.

A. must have been   B. should have been   C. must be   D. should be

---- I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice.  

---- Oh，it____ my uncle. He was in my room then.  

A. should have been                                   B. should be  

C. must have been                                     D. must be  

--I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice.

--Oh，it____ my uncle. He was in my room then.

   A. should have been                      B. should be

   C. must have been                         D. must be

9．  --I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice.
--Oh，it____ my uncle. He was in my room then.

---I rang you yesterday afternoon. A man answered, but I didn’t recognize the voice.
--- Oh, it ____ my uncle. He was in my room then.