13.
A. His phone was disconnected outside the country.
B. He needs to make phone calls to his friends.
C. Using the email will decrease his telephone expenses.
D. His friends would rather hear his sound on the phone.

14.
A. He doesn't have anything to do.
B. He believes she is wrong about the pick-up time.
C. Before lunch is a great time to pick up the document.
D. Time passes very quickly.

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