Some can never go above 4000 meters, because their body is unable to ___________ these extreme conditions.
【2015·福建】It was________of Michael to inform us of his delay in case we got worried.
【2015·四川】Andy is content with the toy. It is he has ever got.
【2015·四川】Little Tom sat watching the monkey dancing in front of him.
【2015·浙江】Listening is thus an active, not a , behavior consisting of hearing, understanding and remembering.
【2015·浙江】Most of us, if we know even a little about where our food comes from, understand that every bite put into our mouths was alive.