1. Sorry, sir, but you can’t go any further without______boarding pass. Please obey ____ rule.
A. the; the B. a; a C. a; the D. the; a
A. everything B. nothing C. anything D. something
3. ---He lost his job last week, but he seems happy．
---I think he _____ to put on a brave face．
A．is trying B．tries C．tried D．has tried
