The driver can adjust the heating in winter and the air conditioning in summer to suit his own _______.
I had hardly got to the office________my wife phoned me to go back home at once.
Please call my secretary to arrange a meeting this afternoon,or________it is convenient to you.
He was so deep in thought,thinking of the problem ________ he knocked into the tree without noticing it.
________you’ve experienced it,you can’t understand how I felt.
________ you may have,you should gather your courage to face the challenge.