During the period of recent terrorist activities, people _____ not to touch an unattended bag．
| A．had always been warned | B．were always being warned |
| C．are always warning | D．always warned |
I’d love ______ room on the higher floor so that I can have a bird’s-eye view of _____ city.
| A．the; a | B．a; the | C．不填; the | D．a; a |
_______ myself to my study, I would be sitting in a comfortable office now.
| A．If I devoted | B．Should I devote | C．Would I devote | D．Had I devoted |
Sunset at Mount Huangshan is a beautiful scene, _______ I’ll never forget.
| A．one | B．it | C．what | D．that |
Mike is handsome, kind and full of energy. , I can’t speak too highly of him.
| A．As a result | B．By the way | C．In a word | D．On the contrary |
The public transportation in this city is very convenient, where many buses run ______.
| A．occasionally | B．approximately | C．immediately | D．frequently |