There isn’t a cloud in the sky, but it (be) cloudy in the morning.
is
was
were

Mrs. Clay usually finishes her work at half past three, but she (finish) it later yesterday afternoon. 
finish
finishes
finished

Every day I help my Mom about the house, but last week I was very busy with my exam. So I (not/help) her much.
not helped
didn’t helped
didn’t help

Tom isn’t playing tennis tomorrow afternoon, he (not/play) tennis yesterday.
doesn’t play
didn’t play
didn’t played

We generally have lunch at 12.30, but yesterday we (have lunch) later.
had lunch
have lunched
had had lunch

Now my brother smokes a lot, but he (not/ smoke) before.
hadn’t smoked
didn’t smoke
not smoked

The Frasers live in four-room apartment, but last year they (live) in a small house in the country. 
were living
did live
lived

I (get) to the market myself last time, but now I don’t remember how to get there.
getted
goted
got

How you (cut) your finger?
How have you cut
How you cutted
How did you cut

Jack (try) to remember what he had done last April.
was tried
tried
tryed

Looking through the paper, the teacher (find) several mistakes.
finded
founded
found

He (meet) Mary and (fall) in love with her at first sight.
had met, falled
met, fell
meeted, fell

Helen (prefer) tea to coffee.
preferred
preffered
prefered

When you (write) to your parents last time?
When do you writed
When did you write
When did you wrote

Yesterday Mr. Watson (drink) too much at the party.
drunk
drinked
drank

Don’t worry about your letter. I (send) it the day before yesterday.
sended
have sent
sent

When I was a child, I (always/be) late for school.
were always late
was always late
be always lated

My husband (work) in the bank for three years since 1990 to 1993.
was worked 
had worked
worked

We (not/have) a holiday last year.
didn’t have
haven’t had
haven’t had

When Jill (finish) school?
When did Jill finished
When was Jill finish
When did Jill finish