Study the sentences in the columns below.

A	B
I saw this movie yesterday	I have seen this movie already
Bepin Babu worked here for a week last year.	Bepin Babu has worked here since 2003.
Chunilal wrote to ba publisher last week.	Chunilal has written to a publisher.
I visited Ranchi once, long ago.	I have visisted Ranchi once before.

Compare the sentences in the two columns, especially the verb forms. Answer the following questions about each pair of sentences.
(i) Which column tells us that Bepin Babu is still working at the same place? (ii) Which column suggests that Chunilal is now waiting for a reply from the publisher?
(iii) Which column suggests that the person still remembers the movie he saw?
(iv) Which column suggests that the experience of visiting Ranchi is still fresh in the speaker's mind?