____to caring for an Ebola(埃博拉) patient, the nurse found herself also infected, feeling hopeless.
The classmates insisted that Daisy ______ a piece of music on the piano.
Jack asked John ______ when he met him in the street.
All newspapers reported that the Chinese soldiers ______ an important role in fighting against the heavy snowfalls.
I hadn’t seen her for 10 years, but I ______ her at once.
There is ______ thing as a free lunch.