I love____ when people sing a song with much work done.
The child walked quietly to the bird. _____into the forest when he was about to catch it.
You spent 300 yuan on a pair of cotton gloves. Such a pair of cotton gloves _____be worth so much.
With more forests being destroyed, huge quantities of good earth _____each year.
It is reported that the United States uses _____ energy as the whole Europe.
In peace, too,the Red Cross is expected to send help _____ there is human suffering.