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. should have been B. should be
C. must have been D. must be
2. —Is the book Lock and Key in the library?
—_______. The school has just bought many new books.
A. Shall be B. Would be
C. Might be D. Should be
