托福詞匯輔導(dǎo)：聽力部分替換詞匯(2)

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