Nowadays people are more concerned about the environment _______ they live.
____ from endless homework on weekends, the students now find their own activities, such as taking a ride together to watch the sunrise.
—How did you sleep last night? —A sound sleep. Never slept ______.
In other cultures, looking thin for a husband-to-be is not a woman desires at all, but looking a little overweight is considered more attractive.
Having been attacked by terrorists, ______.
At first sight, it ________ look like a generous offer; actually, it is a trick.