(1)He often
washes
washes
his clothes on Sundays.
(2)If he comes,I
will/am going to let
will/am going to let
you know.
(3)Wang Lin
is writing
is writing
an e-mail to his friend.
(4)-How
was
was
your weekend on the farm?
-Great!I enjoyed myself a lot.
(5)I
was eating
was eating
my dinner at 7 o'clock in the evening yesterday.