---- 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