My parents
Last weekend I
(sit) in the garden when the phone _ (ring).
(meet) Steve while I (have) lunch at that new restaurant.
When Barry _ (see) Lucy last night, she
While the teacher
(talk) to Charlie.
(explain) the exercise, Mandy
Pine rain
(start) while I
(drop) her pencil.
(come) home from school

Ответ:
Last weekend I was sitting in the garden when the phone rang.
I met Steve while I was having lunch at that new restaurant.
When Barry saw Lucy last night, she was talking to Charlie.
While the teacher was explaining the exercise, Mandy dropped her pencil.
It started raining while I was coming home from school.