---Is there anything wrong, Bob? You look sad.---Oh, nothing much.In fact, I ____ of my friends back home.
. Mary is a(n) _______ customer, so the waiter knows her likes and dislikes.
. Recently I bought a ticket for Shanghai World Expo, _______ was very reasonable.
. ---I’d like to call you at 10 o’clock next Friday morning if it is convenient. ---I’m afraid I _______ an important meeting.
. _______ in the book, he didn’t notice my coming.
. Although this medicine can cure you _______ your illness, it has a bad effect ______ you.