问题
选择题
22.______ in natural gas and oil, so this area is worth developing.
A．Being rich
B．It is rich
C．It being rich
D．To be rich
答案
答案：B
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22.______ in natural gas and oil, so this area is worth developing.
A．Being rich
B．It is rich
C．It being rich
D．To be rich
答案：B