1 . Five years ago, I got an email from a well-known professor in my field in March. He invited me to _________ for a position in his lab. Things went well and all I needed to do was finish up my thesis (毕业论文) and I decided to _________ it in the following months.

One night, my mother came up to my room, asking softly, “Have you _________ your thesis yet?” “Not yet, Mom,” I _________, even too busy to look up at her. Then she mentioned that she had some _________ symptoms (症状) in her body that had never been seen before. She wanted to say something more, but my academic (学业的) _________ made me hardly take her words to heart.

However, two months later, the doctor announced my mother might _________ for less than a year _________ cancer (癌症). It was then that I _________ that things became more serious than I had imagined. Before it was too late, I was __________ to stop my thesis and be there with my mother for her rest life. __________, my mother failed in the battle and passed away at the end of the year. The next July, I finished my scientific thesis and got the __________ from the lab.

When looking back today, I feel __________ for losing precious time with my mother. The __________ of my mother gave me a new way to think about life: If your loved ones need you, be there for them. Science will be waiting when you __________.