问题
选择题
As you can see, we need the equipments, ___________ are necessary to make the project move on.
A．all of which
B．all of them
C．all that
D．all what
答案
答案：A
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As you can see, we need the equipments, ___________ are necessary to make the project move on.
A．all of which
B．all of them
C．all that
D．all what
答案：A