What ______ public is concerned about is whether medical workers and scientists will be able to find _____ cure for this new disease in a short time .
When someone talks, everyone is expected to listen, no matter how ______.
The teacher _____ the students how to improve their writing skill since last term.
______I open my mouth, I put my food in it.
The computer system suddenly_____ while he was searching for information on the Internet.
-----How far apart do Tom and Jack live? -----______I know, they live in the same neighborhood.