The change was so _____ that we hardly noticed it.
| A．actual | B．frequent | C．gradual | D．grateful |
—Could I smoke here?
—I’m afraid smoking is not allowed here. If you _______, go to the smoking room, please.
| A．could | B．must | C．would | D．might |
Food is easy to _______ on hot summer days so it should be cooled or frozen.
| A．break away | B．put away |
| C．go off | D．give off |
We should move on bravely on our life journey ______ difficulty we meet with.
| A．though | B．unless |
| C．however | D．whatever |
In the Asian Games in South Korea, the Chinese team won _______ gold medals as Japan.
| A．more than 3 times as many | B．3 times more than as |
| C．as many more than 3 times | D．as more than 3 times |
Working hard is not a _______ of great success, but it is among the essential requirements.
| A．mark | B．guarantee | C．key | D．signal |