They (visit)________ Cau Giay Park this time last month.
A.was visiting
B.visit
C.visited
D.were visiting

I (play) __________ football when she (call) _________ me.
A.was playing – was calling
B.was playing – called
C.played – called
D.played – was calling

You (study) ___________ Math at 5 p.m. yesterday?
A.Did you study
B.Was you studying
C.Were you studying
D.You were studying

What she (do) ________ while her mother (make) ________lunch?
A.was she doing – made
B.was she doing – was making
C.did she do – made
D.did she do – was making

She (break) _______ the flower vase 2 days ago.
A.broke
B.was breaking
C.breaks
D.breaking

The boy (jump) _________ off the train while it (move)___________.
A.jumping – was moving
B.jumped – was moving
C.jumped – moved
D.was jumping – was moving

The children (do) ________ their homework when their father (come) _________ in.
A.were doing – came
B.were doing – was coming
C.did – came
D.did – was coming

While you (play) ________ the piano, I (write) ____________a letter.
A.were playing – wrote
B.were playing – was writing
C.played – was writing
D.played - wrote

They (come) ___________to see me last week.
A.came
B.come
C.was coming
D.were coming

He (study) __________ medicine at that time? - Yes, he was.
A.Did he study
B.He was studying
C.Was he studying
D.Were he studying