I can't say which type of tea tastes better. It's just a(n) ________ of personal preference.
Sarah made ______ to the airport just in time to catch her plane this morning.
—Would you mind if I sit here?— _________. It is for Mr. Brown.
Now more and more workers ______their free time trying to improve themselves at school or college.
I’m afraid physics is completely ________me and I have to ask you for help.
—How was your recent trip to Jiuzhaigou? —I’ve never had one before.