Yesterday, when I (phone)...........my friends, they(play)..........football.
phoned / were playing
My family (not buy)..............a new house yet.
hasn't bought
We often (go)...........to the cinema.
go
He ..............(go) to Ba Na Hills last summer.
went
you (go).............shopping last week?
Did you go ....?
He (walk).................to school when he (see)............an accident yesterday.
was walking / saw
Mai and Nam (play)..............chess now.
are playing
She (not visit)..............her grandparents last weekend.
didn't visit
They (have)...........dinner at this time yesterday.
were having