f you have lost a library book, you have to _________ it.

MrWhitein Los Angeles for years, but presently he has already adapted to living in Miami

“Could you help me solve the math problem？”“Of course, I can.” He replied ________.[ ]

_______, they will meet you at the airport but if they can’t arrive on time, you can take a taxi instead.

You will know what it is like ________ most of your time listening to dull reports in a meeting room.[ ]