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As she was very tired, she decided not to go swimming.
He learned a lot of things while he was in the country.
You have to do your homework before you watch television.
Where were you while we were looking for you?
Does your brother always brush his teeth before he goes to bed?
He met an old friend while he was walking on the street.
Please wash the dishes after you eat dinner.
While I was doing my homework, my brother was reading a comic book.
It began to rain after he washed his car.
Although it was very late, she decided to go out.
If it is fine tomorrow, we will go on a picnic.
Though she was very tired, she practiced the piano.