—Mary was heard_______ just now. What happened?—John was telling a joke.
The little girl is ________ young ________ look after herself.
The two dresses are very nice. I can’t decide _________。
Sixteen-year-olds should _________their ears pierced.
His grandparents used to ________ a walk after dinner, but now they are used to ________ a walk after breakfast.
My sister was ________out at night.