题目内容
They assured us that ________ was waiting for they were there to share it.
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________ exposure to dirty air can cause people suffer from some diseases.
________ about one of the most rapidly changing countries in a ceaselessly changing world is not all easy.
Though you stay in the sea for weeks, you will not ________ contact with the outside world.
Visitors to England sometimes find the lack of public activities in the evenings ________.
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