A survey about how people in Yangzhou like the Korean TV series Descendants（后裔） of the Sun was ________ in our city last Friday.

―What do you think made Tom unhappy?―his new bicycle again.

Common sense requires us to get away from the concept that national boundaries are frontiers _________ knowledge may not spread.

Please don’t call me at the office it’sreally necessary．

You ____your depression for long, and now it’s time to relax yourself.