Which of the following behaviors are proper at workplace?
A.
If you are in charge, try your best not to let the meetings run long.
B.
When you are working on an important project, you’d better go to work even if you have a cold.
C.
When you are talking to people sitting next to you in an open office, your conversation can last as long as you want only if you are discussing on work and keep a reasonable volume.
D.
If you must interrupt a colleague’s work, keep the interruption to a necessary minimum.