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搜题
【单选题】
We have ______ our staff in the use of laser equipment.A.
educated
B.
trained
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皮皮学刷刷变学霸
举一反三
【简答题】You don't have to sacrifice environmental protection to promote economic gr______.
【单选题】Although you have learned much knowledge and a lot of theories, the problem is _______ can be put into practice.
A.
what you have learned
B.
how what you have learned
C.
that what you have learned
D.
how that you have learned