Surely, there are (lots of problems) (solving in) our research so we (need to) (get well prepared) in advance.

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问题 Surely, there are (lots of problems) (solving in) our research so we (need to) (get well prepared) in advance.

选项 A、lots of problems
B、solving in
C、need to
D、get well prepared

答案B

解析
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