30. More than 20 years ago he was badly wounded in the anti-Vietnam war. Since then he can only walk _____ an arm-chair .
In the questionnaire, the subjects are questioned whether they ________ no smoking in the public area.
--- Do you think that the 11th Chinese National Games were a success ? --- Yes, ___! It couldn’t be ____ .
Alibaba has become China’s largest online commercial company, _____ a profit of 1.47 billion yuan in 2010.
I went to bed very late last night, ___, early the next morning .
When ___ comes to saving energy , big changes start with small steps , like turning off the lights.