问题
选择题
.
The global warming is going to be a big problem and many people are wondering ________ we can do with it.
A．if
B．how
C．that
D．what
答案
答案：D
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.
The global warming is going to be a big problem and many people are wondering ________ we can do with it.
A．if
B．how
C．that
D．what
答案：D