9849 - Part D (Page 161) Test:6 - A: What was that noise? B: Oh, don’t worry; it ________ the cat.

A: What was that noise?
B: Oh, don’t worry; it ________ the cat.
ought to be
must have been
can be
should’ve been
Elementary Grammar Exercises A1
English Vocabulary Tests
Pre-Intermediate Grammar Exercises
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