How many computers arethere in the room—__________. Some workersmoved them to another place just now.

_____ the great efforts we had made three years before, we failed to carry our plans through

New digital mobile phones definitely produce less radiation, but that doesn’t mean that they should be used without caution.

With some snow on top of it,the Yellow Mountain looked fantastic this winter.Actually, I doubt whether we could visit ______mountian in China.

Scientists are convincedthepositive effect of laughter_____physical and mental health.