Thanks to the economical development, workers' wages have increased ________ as far as 200% in the recent three years.
The question under discussion here is ______ of the "white pollution".
第二节:单项填空(共15小题,每小题1分,满分15分)I hate _______ when someone calls or knocks at the door while I’m still in bed.
----- Would you mind helping me with my suitcase? I really can’t manage it by myself.----- ________.
______ after a long walk, Henry called and said he couldn’t come.
At the age of six, my son _____ ask me a lot of strange questions, and some of them were too hard to answer.