_____it is to go for a picnic on such a fine day!
(2009·北京) For breakfast he only drinks juice from fresh fruit __________ on his own farm.
After that, he knew he could __________ any emergency by doing what he could to the best of his ability.
Never before __________ seen anybody who can play tennis as well as Robert.
Only with the greatest of luck __________ to escape from the rising flood waters.
The headmaster will not permit the change in the course, nor __________ it a thought.