Scientists think they have in their attempt to find the causes of some major diseases A broken through B worked though C got thought D gone though
His parents showed no signs of _______ to his demands.
The house had been out of condition for years, so they decided to ___________.
The reason ________ he was late for the meeting was _______ his car had broken down on the road.
This is just the place ________ I am longing to visit these years.
Taxi _________ have stayed fixed for more than five years.