Everybody has ______ responsibility to save water, if future generations are to enjoy _____ similar standard of living to the one we enjoy now.
Our attitude towards life is________makes the difference between our being happy or not.
The hotel wasn't particularly good,but I ________ in many worse hotels.
—I wonder why Mr Green hasn't showed up at the meeting yet. —I'm not sure,but he________in a traffic jam driving here.
Some drunken drivers think that they may be lucky to________a fine, which may cost their own lives.
Great changes___ have taken place _____ in the city, and a lot of factories________.