Some researchers are finding that daydreaming may be important to mental health .Daydreaming ,they say, is good means of relaxation.
If you always let the boy do whatever he wants, you might _______ spoiling him.
The country has already sent up three unmanned spacecrafts, the most recent _______ at the end of last March.
They bought their daughter ___________ handbags as her birthday present.
As for the accident this time, I think it is Richard you, to blame.
On ________ our flight would be delayed, we made some other arrangements.