The parents are _____ their son who has been away from home for days.
After supper, he usually stood near the window, ___ he could see the tower, the tallest building of the town.
Jack is believed _____ his goal, who is said ____ the stage.
I’m not sure ___ I can learn at present; but I’m sure it will be something ___ I might use in the future.
I wonder if John has forgotten my number. I ___ him to call for the past two hours.
He ___ the money, he is not such kind of person.