Doing sports at least one hour a day helps to        ourselves       .
A. build...up             B. send...up               C. pick...up
A

試題分析：build...up建立，增強(qiáng)；send...up 提出，使上升；pick...up撿起，學(xué)會(huì).句意：每天最少做一個(gè)小時(shí)的鍛煉有助于增強(qiáng)我們的體質(zhì)。故選A。
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