—How do you like his plan?—It may be so in _ ____ theory, but how will it work in ______practice?
We have every reason to believe that ____ 2010 World Expo in Shanghai will be ______ success.
____ the floor, I found his pen lying on the ground.
To master a foreign language, ______.
With a lot of difficulties _______, they went to the seashore and had a good rest.
It is difficult to imagine his ______the decision without any consideration.