a) has sold
b)has drunk
c)have seen
d)have went
e)has been
f)have booked
g)have known
h)have found
i)has said
j)have walked
a) has sold
b)has drunk
c)have seen
d)have went
e)has been
f)have booked
g)have known
h)have found
i)has said
j)have walked