k! What are those boysdoing ______ the table—Well, they are playing cards

Mr. Smith had taught for many years, and all the students him.

e the drowning child, the boy plunged into the icywater without hesitation, ____ his own safety

The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?—____ my students have a try?

She with her parents _____ holiday now.