Our research has focused on a drug which is so _____ as to be able to change brain chemistry.
It is so nice to hear from her. _________, we last met more than thirty years ago.
The computer system __________ suddenly while he was searching for information on the Internet.
Someone is ringing the doorbell . Go and see ______?
_______ from what he said and did , Mr White is a doctor.
Early to bed and early to rise ______ a man healthy, happy and wise.