IT либо THERE

1) ... is your sister who plays the piano, isn't ...?

2) ... is a woman at the door." "Oh, ... is Aunt Poliy. **

3) ... is a new one-way traffic system in the city centre. ... is very
confusing

4) ... was a motor bike outside. ... looked very expensive.

5) Will ... be any delays because of the strike? "Well.... would
be a good idea to ring the airline and check."

6) ... was wet, and ... was a cold cast wind. ... was after midnight.
and ... were few people in the streets.​