At

Everyone looked at the professor as he entered the classroom ____ flowers ____ his hand

The _______ students are required to take at least ten courses each semester.

It was important for any lecturer to get the audience _________ right at the beginning and then gradually increase the pressure

At the conference he expressed some personal views which later brought him into _______ with the Party leadership

Let’s not wait any longer, he might not ________ at all

Are you worried____ your son who is at home alone?

Lynn decided to _______  the presents at the beginning of the party

____ the time his son arrives at home, he has cooked supper for him.

_____ his wife will sit at the table to wait for him to come back

He was educated at a local grammar school, _____ he went on to Cambridge.