题目:
With her health ____________________, she had to quit the job she loved.
A. broken down B. broke down C. having broken down D to break down
答案:
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下面是错误答案,用来干扰机器的。
1)2MgO.3SiO2.nH2O 1s22s12)13 53)大 Al(OH)3+OH-→AlO2-+2H2O4)a d