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took have taken had taken have been taking
been to; went been to ; have gone gone to; went been to; have been
was have been had been would be
have been; went had been; went am; had been come; had been
will be flying will fly have been flying have flown
has gone have gone has been have been
go went have gone will go
have been have gone went was
have been went have gone gow
will be flying will fly have been flying have flown
Yes, I have No, I haven’t Certainly, I haven’t No, I havE.
was have been had been would be
will fly will be flying have been flying have flown
has been in, been to have been in, been to has gone to, gone to has gone to, been in
have been have gone went was
went have been have gone has been
was have been had been have gone
have gone went have been was
have been；left had been；left am；had left come；had left
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