Mr Bryan is a/an _______ secretary in our office, for he is able to do tasks successfully, without wasting time or energy

is known to us all is that the old worker, 　　　life was hard in the past, still works hard in his seventies.

came ___ two idioms which puzzled me on the cover of an old book which I was looking for a new material in yesterday.—Why not go to the teacher for ___ about them?

While riding in the street, _______________________________.

Large quantities of information, as well as some timely help _____ since the organization was built