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6) It is a long time since we last met.
=> We haven't................................................................................................
7) When did you have it ?
=> How long .................................................................................................?
8) This is the first time I had such a delicious meal .
=> I haven't..................................................................................................
9) I haven't seen him for 8 days.
=> The last ..................................................................................................
10) I haven't taken a bath since 2 days ago.
=> It is .........................................................................................................