It’s no use ______ without taking any action. [ ]

Passengers are permitted only one piece of hand luggage onto the plane.

he manager of the factory wants to improve production a great deal, but he doesn’t spend much on technology.—I am afraid he won’t realize his dream. You know ________.

More than one member ____ against the plan

What does the sign over there read一No person ______ smoke or carry a lighted cigarette，cigar or pipe in this area．