Determining where we are _________our surroundings remains an essential skill for our survival.
in contrast to
in defense of
in face of
in relation to
______ along with host families, I believe, language travel students are likely to get enough language practice.
Today we have chat rooms, text messages and email, but we seem _______ the art of communicating face-to-face.
_________ to too much sunlight will do harm to your skin.
()There is no greater pleasure than lying on my back in the middle of the grassland, _____at the night sky.
__________ the program , they have to stay there for another two weeks.