From his _______ look, we could see that he hadn’t expected that we could raise such _______ questions to him.
_____ playing dumb with teachers. They know very well their students.
They thought my suggestion reasonable _______a few experts to help them.
_____but he still couldn’t understand the logical connection of the two subjects.
It was not until he came back _____ he knew the police were looking for him.
All her time _______ experiments, she has no time for films.