【题目】The problem is so complex that I'm afraid it will take me several hours to________．
A. figure out B. set out
C. break out D. put out
在线课程【答案】A
【解析】试题分析：句意:问题如此复杂以至于我担心会花几个小时的时间去解决。A．figure out解决，算出；B．set out出发，动身；C．break out爆发；D．put out熄灭，关。故选A。