s Tu Youyou once commented, “In order to make some achievements and ______ yourself in your field, there are certain things you must do.”

Just in front of our house__________ with a history of 1000 years.[ ]

He finds it hard to keep _____ with the change of society if he stops learning．

We are having fun in the river.

It’s been such a wonderful evening with you! Thank you very much!—_______