English /Вставьте глаголы в Past Perfect or Past Simple:
After John …
(wash) his clothes, he began to study.
Maria … (enter)
the university after she had graduated from the community colledge.
George … (wait)
for one hour before the bus came.
The car … (flip)
ten times before it landed on its roof.
Jenny … (wash) the pipettes after she had completed