The limits of a person's intelligence,generally speaking,are fixed at birth,but ________ he reaches these limits will depend on his environment.(2011·安徽)
I don't think our relationship could __________ the strain of her mother visiting for a month.
Some parents are just too protective. They want to __________ their kids from every kind of danger, real or imagined.
—Sorry, I have to __________ now. It's time for class. —OK, I'll call back later.
(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.