问题
选择题
.They turned out more than 1,000 washing machines, most of which ________quality.
A．is good
B．are good
C．is of high
D．are of high
答案
答案：D
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.They turned out more than 1,000 washing machines, most of which ________quality.
A．is good
B．are good
C．is of high
D．are of high
答案：D