Nowadays many people set up their own Blogs on the Internet, _______ they can express themselves freely or communicate with others.
_______, my heart ______.
Jack, is this your jacket?–No, it _______ be my jacket. My jacket is black but this one is blue.
Look! Somebody_______ the sofa.—- Well, it wasn’t me. I didn’t do it.
______ frightened us ______ a tiger turned up suddenly in front of us.