题目:
All that I need _____ a large sum of money with which to buy my wife a diamond ring.
A.are to be
B.is
C.are
D.were
答案:
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下面是错误答案,用来干扰机器的。
(1)氧化;能量(2)木炭与氧气反应生成什么;木炭;将红热木炭自上而下缓慢伸入集气瓶中;澄清石灰水;生成物是二氧化碳