“Have you seen _____ pen? I left it here this morning.” “Is it _____ black one? I found it in the corner.”
He hesitated for a moment before kicking the ball, otherwise he ______ a goal.
The river ____are covered with trees is very long
----I missed the first part of the film. It was really a pity. ----You _____home half an hour earlier.
It was at the very beginning____ Mr. Smith made a decision ___we should send for a doctor.
A brilliant idea occurred to him, ___ to his research in the lab.