_____ me, could you tell me the way to the post office?
A. Excuse
B. To excuse
C. Excusing
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The medicine has an _____ on her.
Affection
B. effect
C. effective
I went to London to _____ an event.
A. attend
B. attendance
C. attending
If you believe in yourself, anything is ______
A. possibility
B. possibly
C. possible
There's nothing wrong _________ on yourself and schoolwork.
A. with focusing
B. to focusing
C. with focus