______will conquer ______ nature.
At first he refused to admit he had stolen but when he was shown the videotape he ______ and admitted everything.
Only when _________ be possible to sign the papers.
Glasses are __and must be handled with great care.
The school rule states that no child shall be, unless _by an adult, allowed out of the school during the day.
Stephen Hawking believes that the earth is unlikely to be the only planet life has developed gradually.