People wrote letters to get in touch in the past. Nowadays email has the way people communicate.
Witout the air to hold some of the sun’s heat, the earth at night ________, too cold for us to live.
The patient is supposed to go to the hospital for ___________ checks.
—Do you think we should accept that offer? — Yes, we should, for we ___such bad luck up till now, and time __ out.
It is uncertain side effect the medicine will bring about, although about two thousand patients have taken it.
Hawking is _________success, _________disabled man though he is.