Question

1. they(not see)                the film titannic yet
2. tom(call)                        his boss yesterday.
3. john(read)                      the letter from mary already.

Answer 1

1. they(not see)      haven't seen           the film titannic yet
2. tom(call)           called             his boss yesterday.
3. john(read)     has read                 the letter from mary already.

Answer 2

\(1.\) haven't seen

\(2.\) called

\(3.\) has read