题目内容
Your knowledge will soon add ________ if you study hard in a couple of years.
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Sometimes you need to slow ________in order to vitalize yourself while learning a foreign language.
Sometimes we need to step ________ and don't be in such a hurry.
Have you set ________ some time and energy for your after-school learning?
We need to ensure that every ______ threat or barrier to the new way of communication is removed.
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