2010托福詞匯：托福聽力部分替換詞匯（二）

B
    backpack ——> knapsack
    be crowded ——> be well-attended
    be done ——> complete
    be free ——> not busy
    be in one ear and out the other ——> doesn't listen
    be onto something ——> promising
    be overwhelmed with ——> be busy with
    beach ——> seashore
    best score ——> perfect grade
    beyond sb. ——> not understand
    big sale ——> discount
     book ——> reserve
    boring ——> uninteresting
    borrow ——> lend
    breathe ——> air pollution
    brighten one's spirits ——> make one feel better
    broke ——> no money
    budget ——> money // price
    bump into ——> meet // see
    buy ——> purchased
    by and by ——> in a short while
    by leaps and bounds ——> quickly